1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/ceph/ceph_debug.h>
4 #include <linux/module.h>
6 #include <linux/slab.h>
7 #include <linux/string.h>
8 #include <linux/uaccess.h>
9 #include <linux/kernel.h>
10 #include <linux/writeback.h>
11 #include <linux/vmalloc.h>
12 #include <linux/xattr.h>
13 #include <linux/posix_acl.h>
14 #include <linux/random.h>
15 #include <linux/sort.h>
18 #include "mds_client.h"
20 #include <linux/ceph/decode.h>
23 * Ceph inode operations
25 * Implement basic inode helpers (get, alloc) and inode ops (getattr,
26 * setattr, etc.), xattr helpers, and helpers for assimilating
27 * metadata returned by the MDS into our cache.
29 * Also define helpers for doing asynchronous writeback, invalidation,
30 * and truncation for the benefit of those who can't afford to block
31 * (typically because they are in the message handler path).
34 static const struct inode_operations ceph_symlink_iops
;
36 static void ceph_invalidate_work(struct work_struct
*work
);
37 static void ceph_writeback_work(struct work_struct
*work
);
38 static void ceph_vmtruncate_work(struct work_struct
*work
);
41 * find or create an inode, given the ceph ino number
43 static int ceph_set_ino_cb(struct inode
*inode
, void *data
)
45 ceph_inode(inode
)->i_vino
= *(struct ceph_vino
*)data
;
46 inode
->i_ino
= ceph_vino_to_ino(*(struct ceph_vino
*)data
);
50 struct inode
*ceph_get_inode(struct super_block
*sb
, struct ceph_vino vino
)
53 ino_t t
= ceph_vino_to_ino(vino
);
55 inode
= iget5_locked(sb
, t
, ceph_ino_compare
, ceph_set_ino_cb
, &vino
);
57 return ERR_PTR(-ENOMEM
);
58 if (inode
->i_state
& I_NEW
) {
59 dout("get_inode created new inode %p %llx.%llx ino %llx\n",
60 inode
, ceph_vinop(inode
), (u64
)inode
->i_ino
);
61 unlock_new_inode(inode
);
64 dout("get_inode on %lu=%llx.%llx got %p\n", inode
->i_ino
, vino
.ino
,
70 * get/constuct snapdir inode for a given directory
72 struct inode
*ceph_get_snapdir(struct inode
*parent
)
74 struct ceph_vino vino
= {
75 .ino
= ceph_ino(parent
),
78 struct inode
*inode
= ceph_get_inode(parent
->i_sb
, vino
);
79 struct ceph_inode_info
*ci
= ceph_inode(inode
);
81 BUG_ON(!S_ISDIR(parent
->i_mode
));
84 inode
->i_mode
= parent
->i_mode
;
85 inode
->i_uid
= parent
->i_uid
;
86 inode
->i_gid
= parent
->i_gid
;
87 inode
->i_op
= &ceph_snapdir_iops
;
88 inode
->i_fop
= &ceph_snapdir_fops
;
89 ci
->i_snap_caps
= CEPH_CAP_PIN
; /* so we can open */
94 const struct inode_operations ceph_file_iops
= {
95 .permission
= ceph_permission
,
96 .setattr
= ceph_setattr
,
97 .getattr
= ceph_getattr
,
98 .listxattr
= ceph_listxattr
,
99 .get_acl
= ceph_get_acl
,
100 .set_acl
= ceph_set_acl
,
105 * We use a 'frag tree' to keep track of the MDS's directory fragments
106 * for a given inode (usually there is just a single fragment). We
107 * need to know when a child frag is delegated to a new MDS, or when
108 * it is flagged as replicated, so we can direct our requests
113 * find/create a frag in the tree
115 static struct ceph_inode_frag
*__get_or_create_frag(struct ceph_inode_info
*ci
,
119 struct rb_node
*parent
= NULL
;
120 struct ceph_inode_frag
*frag
;
123 p
= &ci
->i_fragtree
.rb_node
;
126 frag
= rb_entry(parent
, struct ceph_inode_frag
, node
);
127 c
= ceph_frag_compare(f
, frag
->frag
);
136 frag
= kmalloc(sizeof(*frag
), GFP_NOFS
);
138 return ERR_PTR(-ENOMEM
);
145 rb_link_node(&frag
->node
, parent
, p
);
146 rb_insert_color(&frag
->node
, &ci
->i_fragtree
);
148 dout("get_or_create_frag added %llx.%llx frag %x\n",
149 ceph_vinop(&ci
->vfs_inode
), f
);
154 * find a specific frag @f
156 struct ceph_inode_frag
*__ceph_find_frag(struct ceph_inode_info
*ci
, u32 f
)
158 struct rb_node
*n
= ci
->i_fragtree
.rb_node
;
161 struct ceph_inode_frag
*frag
=
162 rb_entry(n
, struct ceph_inode_frag
, node
);
163 int c
= ceph_frag_compare(f
, frag
->frag
);
175 * Choose frag containing the given value @v. If @pfrag is
176 * specified, copy the frag delegation info to the caller if
179 static u32
__ceph_choose_frag(struct ceph_inode_info
*ci
, u32 v
,
180 struct ceph_inode_frag
*pfrag
, int *found
)
182 u32 t
= ceph_frag_make(0, 0);
183 struct ceph_inode_frag
*frag
;
191 WARN_ON(!ceph_frag_contains_value(t
, v
));
192 frag
= __ceph_find_frag(ci
, t
);
194 break; /* t is a leaf */
195 if (frag
->split_by
== 0) {
197 memcpy(pfrag
, frag
, sizeof(*pfrag
));
204 nway
= 1 << frag
->split_by
;
205 dout("choose_frag(%x) %x splits by %d (%d ways)\n", v
, t
,
206 frag
->split_by
, nway
);
207 for (i
= 0; i
< nway
; i
++) {
208 n
= ceph_frag_make_child(t
, frag
->split_by
, i
);
209 if (ceph_frag_contains_value(n
, v
)) {
216 dout("choose_frag(%x) = %x\n", v
, t
);
221 u32
ceph_choose_frag(struct ceph_inode_info
*ci
, u32 v
,
222 struct ceph_inode_frag
*pfrag
, int *found
)
225 mutex_lock(&ci
->i_fragtree_mutex
);
226 ret
= __ceph_choose_frag(ci
, v
, pfrag
, found
);
227 mutex_unlock(&ci
->i_fragtree_mutex
);
232 * Process dirfrag (delegation) info from the mds. Include leaf
233 * fragment in tree ONLY if ndist > 0. Otherwise, only
234 * branches/splits are included in i_fragtree)
236 static int ceph_fill_dirfrag(struct inode
*inode
,
237 struct ceph_mds_reply_dirfrag
*dirinfo
)
239 struct ceph_inode_info
*ci
= ceph_inode(inode
);
240 struct ceph_inode_frag
*frag
;
241 u32 id
= le32_to_cpu(dirinfo
->frag
);
242 int mds
= le32_to_cpu(dirinfo
->auth
);
243 int ndist
= le32_to_cpu(dirinfo
->ndist
);
248 spin_lock(&ci
->i_ceph_lock
);
250 diri_auth
= ci
->i_auth_cap
->mds
;
251 spin_unlock(&ci
->i_ceph_lock
);
253 if (mds
== -1) /* CDIR_AUTH_PARENT */
256 mutex_lock(&ci
->i_fragtree_mutex
);
257 if (ndist
== 0 && mds
== diri_auth
) {
258 /* no delegation info needed. */
259 frag
= __ceph_find_frag(ci
, id
);
262 if (frag
->split_by
== 0) {
263 /* tree leaf, remove */
264 dout("fill_dirfrag removed %llx.%llx frag %x"
265 " (no ref)\n", ceph_vinop(inode
), id
);
266 rb_erase(&frag
->node
, &ci
->i_fragtree
);
269 /* tree branch, keep and clear */
270 dout("fill_dirfrag cleared %llx.%llx frag %x"
271 " referral\n", ceph_vinop(inode
), id
);
279 /* find/add this frag to store mds delegation info */
280 frag
= __get_or_create_frag(ci
, id
);
282 /* this is not the end of the world; we can continue
283 with bad/inaccurate delegation info */
284 pr_err("fill_dirfrag ENOMEM on mds ref %llx.%llx fg %x\n",
285 ceph_vinop(inode
), le32_to_cpu(dirinfo
->frag
));
291 frag
->ndist
= min_t(u32
, ndist
, CEPH_MAX_DIRFRAG_REP
);
292 for (i
= 0; i
< frag
->ndist
; i
++)
293 frag
->dist
[i
] = le32_to_cpu(dirinfo
->dist
[i
]);
294 dout("fill_dirfrag %llx.%llx frag %x ndist=%d\n",
295 ceph_vinop(inode
), frag
->frag
, frag
->ndist
);
298 mutex_unlock(&ci
->i_fragtree_mutex
);
302 static int frag_tree_split_cmp(const void *l
, const void *r
)
304 struct ceph_frag_tree_split
*ls
= (struct ceph_frag_tree_split
*)l
;
305 struct ceph_frag_tree_split
*rs
= (struct ceph_frag_tree_split
*)r
;
306 return ceph_frag_compare(le32_to_cpu(ls
->frag
),
307 le32_to_cpu(rs
->frag
));
310 static bool is_frag_child(u32 f
, struct ceph_inode_frag
*frag
)
313 return f
== ceph_frag_make(0, 0);
314 if (ceph_frag_bits(f
) != ceph_frag_bits(frag
->frag
) + frag
->split_by
)
316 return ceph_frag_contains_value(frag
->frag
, ceph_frag_value(f
));
319 static int ceph_fill_fragtree(struct inode
*inode
,
320 struct ceph_frag_tree_head
*fragtree
,
321 struct ceph_mds_reply_dirfrag
*dirinfo
)
323 struct ceph_inode_info
*ci
= ceph_inode(inode
);
324 struct ceph_inode_frag
*frag
, *prev_frag
= NULL
;
325 struct rb_node
*rb_node
;
326 unsigned i
, split_by
, nsplits
;
330 mutex_lock(&ci
->i_fragtree_mutex
);
331 nsplits
= le32_to_cpu(fragtree
->nsplits
);
332 if (nsplits
!= ci
->i_fragtree_nsplits
) {
334 } else if (nsplits
) {
335 i
= prandom_u32() % nsplits
;
336 id
= le32_to_cpu(fragtree
->splits
[i
].frag
);
337 if (!__ceph_find_frag(ci
, id
))
339 } else if (!RB_EMPTY_ROOT(&ci
->i_fragtree
)) {
340 rb_node
= rb_first(&ci
->i_fragtree
);
341 frag
= rb_entry(rb_node
, struct ceph_inode_frag
, node
);
342 if (frag
->frag
!= ceph_frag_make(0, 0) || rb_next(rb_node
))
345 if (!update
&& dirinfo
) {
346 id
= le32_to_cpu(dirinfo
->frag
);
347 if (id
!= __ceph_choose_frag(ci
, id
, NULL
, NULL
))
354 sort(fragtree
->splits
, nsplits
, sizeof(fragtree
->splits
[0]),
355 frag_tree_split_cmp
, NULL
);
358 dout("fill_fragtree %llx.%llx\n", ceph_vinop(inode
));
359 rb_node
= rb_first(&ci
->i_fragtree
);
360 for (i
= 0; i
< nsplits
; i
++) {
361 id
= le32_to_cpu(fragtree
->splits
[i
].frag
);
362 split_by
= le32_to_cpu(fragtree
->splits
[i
].by
);
363 if (split_by
== 0 || ceph_frag_bits(id
) + split_by
> 24) {
364 pr_err("fill_fragtree %llx.%llx invalid split %d/%u, "
365 "frag %x split by %d\n", ceph_vinop(inode
),
366 i
, nsplits
, id
, split_by
);
371 frag
= rb_entry(rb_node
, struct ceph_inode_frag
, node
);
372 if (ceph_frag_compare(frag
->frag
, id
) >= 0) {
373 if (frag
->frag
!= id
)
376 rb_node
= rb_next(rb_node
);
379 rb_node
= rb_next(rb_node
);
380 /* delete stale split/leaf node */
381 if (frag
->split_by
> 0 ||
382 !is_frag_child(frag
->frag
, prev_frag
)) {
383 rb_erase(&frag
->node
, &ci
->i_fragtree
);
384 if (frag
->split_by
> 0)
385 ci
->i_fragtree_nsplits
--;
391 frag
= __get_or_create_frag(ci
, id
);
395 if (frag
->split_by
== 0)
396 ci
->i_fragtree_nsplits
++;
397 frag
->split_by
= split_by
;
398 dout(" frag %x split by %d\n", frag
->frag
, frag
->split_by
);
402 frag
= rb_entry(rb_node
, struct ceph_inode_frag
, node
);
403 rb_node
= rb_next(rb_node
);
404 /* delete stale split/leaf node */
405 if (frag
->split_by
> 0 ||
406 !is_frag_child(frag
->frag
, prev_frag
)) {
407 rb_erase(&frag
->node
, &ci
->i_fragtree
);
408 if (frag
->split_by
> 0)
409 ci
->i_fragtree_nsplits
--;
414 mutex_unlock(&ci
->i_fragtree_mutex
);
419 * initialize a newly allocated inode.
421 struct inode
*ceph_alloc_inode(struct super_block
*sb
)
423 struct ceph_inode_info
*ci
;
426 ci
= kmem_cache_alloc(ceph_inode_cachep
, GFP_NOFS
);
430 dout("alloc_inode %p\n", &ci
->vfs_inode
);
432 spin_lock_init(&ci
->i_ceph_lock
);
435 ci
->i_inline_version
= 0;
436 ci
->i_time_warp_seq
= 0;
437 ci
->i_ceph_flags
= 0;
438 atomic64_set(&ci
->i_ordered_count
, 1);
439 atomic64_set(&ci
->i_release_count
, 1);
440 atomic64_set(&ci
->i_complete_seq
[0], 0);
441 atomic64_set(&ci
->i_complete_seq
[1], 0);
442 ci
->i_symlink
= NULL
;
447 memset(&ci
->i_dir_layout
, 0, sizeof(ci
->i_dir_layout
));
448 RCU_INIT_POINTER(ci
->i_layout
.pool_ns
, NULL
);
450 ci
->i_fragtree
= RB_ROOT
;
451 mutex_init(&ci
->i_fragtree_mutex
);
453 ci
->i_xattrs
.blob
= NULL
;
454 ci
->i_xattrs
.prealloc_blob
= NULL
;
455 ci
->i_xattrs
.dirty
= false;
456 ci
->i_xattrs
.index
= RB_ROOT
;
457 ci
->i_xattrs
.count
= 0;
458 ci
->i_xattrs
.names_size
= 0;
459 ci
->i_xattrs
.vals_size
= 0;
460 ci
->i_xattrs
.version
= 0;
461 ci
->i_xattrs
.index_version
= 0;
463 ci
->i_caps
= RB_ROOT
;
464 ci
->i_auth_cap
= NULL
;
465 ci
->i_dirty_caps
= 0;
466 ci
->i_flushing_caps
= 0;
467 INIT_LIST_HEAD(&ci
->i_dirty_item
);
468 INIT_LIST_HEAD(&ci
->i_flushing_item
);
469 ci
->i_prealloc_cap_flush
= NULL
;
470 INIT_LIST_HEAD(&ci
->i_cap_flush_list
);
471 init_waitqueue_head(&ci
->i_cap_wq
);
472 ci
->i_hold_caps_min
= 0;
473 ci
->i_hold_caps_max
= 0;
474 INIT_LIST_HEAD(&ci
->i_cap_delay_list
);
475 INIT_LIST_HEAD(&ci
->i_cap_snaps
);
476 ci
->i_head_snapc
= NULL
;
479 for (i
= 0; i
< CEPH_FILE_MODE_BITS
; i
++)
480 ci
->i_nr_by_mode
[i
] = 0;
482 mutex_init(&ci
->i_truncate_mutex
);
483 ci
->i_truncate_seq
= 0;
484 ci
->i_truncate_size
= 0;
485 ci
->i_truncate_pending
= 0;
488 ci
->i_reported_size
= 0;
489 ci
->i_wanted_max_size
= 0;
490 ci
->i_requested_max_size
= 0;
494 ci
->i_rdcache_ref
= 0;
497 ci
->i_wrbuffer_ref
= 0;
498 ci
->i_wrbuffer_ref_head
= 0;
499 atomic_set(&ci
->i_filelock_ref
, 0);
500 atomic_set(&ci
->i_shared_gen
, 1);
501 ci
->i_rdcache_gen
= 0;
502 ci
->i_rdcache_revoking
= 0;
504 INIT_LIST_HEAD(&ci
->i_unsafe_dirops
);
505 INIT_LIST_HEAD(&ci
->i_unsafe_iops
);
506 spin_lock_init(&ci
->i_unsafe_lock
);
508 ci
->i_snap_realm
= NULL
;
509 INIT_LIST_HEAD(&ci
->i_snap_realm_item
);
510 INIT_LIST_HEAD(&ci
->i_snap_flush_item
);
512 INIT_WORK(&ci
->i_wb_work
, ceph_writeback_work
);
513 INIT_WORK(&ci
->i_pg_inv_work
, ceph_invalidate_work
);
515 INIT_WORK(&ci
->i_vmtruncate_work
, ceph_vmtruncate_work
);
517 ceph_fscache_inode_init(ci
);
519 return &ci
->vfs_inode
;
522 void ceph_free_inode(struct inode
*inode
)
524 struct ceph_inode_info
*ci
= ceph_inode(inode
);
526 kfree(ci
->i_symlink
);
527 kmem_cache_free(ceph_inode_cachep
, ci
);
530 void ceph_destroy_inode(struct inode
*inode
)
532 struct ceph_inode_info
*ci
= ceph_inode(inode
);
533 struct ceph_inode_frag
*frag
;
536 dout("destroy_inode %p ino %llx.%llx\n", inode
, ceph_vinop(inode
));
538 ceph_fscache_unregister_inode_cookie(ci
);
540 __ceph_remove_caps(inode
);
542 if (__ceph_has_any_quota(ci
))
543 ceph_adjust_quota_realms_count(inode
, false);
546 * we may still have a snap_realm reference if there are stray
547 * caps in i_snap_caps.
549 if (ci
->i_snap_realm
) {
550 struct ceph_mds_client
*mdsc
=
551 ceph_inode_to_client(inode
)->mdsc
;
552 if (ceph_snap(inode
) == CEPH_NOSNAP
) {
553 struct ceph_snap_realm
*realm
= ci
->i_snap_realm
;
554 dout(" dropping residual ref to snap realm %p\n",
556 spin_lock(&realm
->inodes_with_caps_lock
);
557 list_del_init(&ci
->i_snap_realm_item
);
558 ci
->i_snap_realm
= NULL
;
559 if (realm
->ino
== ci
->i_vino
.ino
)
561 spin_unlock(&realm
->inodes_with_caps_lock
);
562 ceph_put_snap_realm(mdsc
, realm
);
564 ceph_put_snapid_map(mdsc
, ci
->i_snapid_map
);
565 ci
->i_snap_realm
= NULL
;
569 while ((n
= rb_first(&ci
->i_fragtree
)) != NULL
) {
570 frag
= rb_entry(n
, struct ceph_inode_frag
, node
);
571 rb_erase(n
, &ci
->i_fragtree
);
574 ci
->i_fragtree_nsplits
= 0;
576 __ceph_destroy_xattrs(ci
);
577 if (ci
->i_xattrs
.blob
)
578 ceph_buffer_put(ci
->i_xattrs
.blob
);
579 if (ci
->i_xattrs
.prealloc_blob
)
580 ceph_buffer_put(ci
->i_xattrs
.prealloc_blob
);
582 ceph_put_string(rcu_dereference_raw(ci
->i_layout
.pool_ns
));
585 int ceph_drop_inode(struct inode
*inode
)
588 * Positve dentry and corresponding inode are always accompanied
589 * in MDS reply. So no need to keep inode in the cache after
590 * dropping all its aliases.
595 static inline blkcnt_t
calc_inode_blocks(u64 size
)
597 return (size
+ (1<<9) - 1) >> 9;
601 * Helpers to fill in size, ctime, mtime, and atime. We have to be
602 * careful because either the client or MDS may have more up to date
603 * info, depending on which capabilities are held, and whether
604 * time_warp_seq or truncate_seq have increased. (Ordinarily, mtime
605 * and size are monotonically increasing, except when utimes() or
606 * truncate() increments the corresponding _seq values.)
608 int ceph_fill_file_size(struct inode
*inode
, int issued
,
609 u32 truncate_seq
, u64 truncate_size
, u64 size
)
611 struct ceph_inode_info
*ci
= ceph_inode(inode
);
614 if (ceph_seq_cmp(truncate_seq
, ci
->i_truncate_seq
) > 0 ||
615 (truncate_seq
== ci
->i_truncate_seq
&& size
> inode
->i_size
)) {
616 dout("size %lld -> %llu\n", inode
->i_size
, size
);
617 if (size
> 0 && S_ISDIR(inode
->i_mode
)) {
618 pr_err("fill_file_size non-zero size for directory\n");
621 i_size_write(inode
, size
);
622 inode
->i_blocks
= calc_inode_blocks(size
);
623 ci
->i_reported_size
= size
;
624 if (truncate_seq
!= ci
->i_truncate_seq
) {
625 dout("truncate_seq %u -> %u\n",
626 ci
->i_truncate_seq
, truncate_seq
);
627 ci
->i_truncate_seq
= truncate_seq
;
629 /* the MDS should have revoked these caps */
630 WARN_ON_ONCE(issued
& (CEPH_CAP_FILE_EXCL
|
633 CEPH_CAP_FILE_LAZYIO
));
635 * If we hold relevant caps, or in the case where we're
636 * not the only client referencing this file and we
637 * don't hold those caps, then we need to check whether
638 * the file is either opened or mmaped
640 if ((issued
& (CEPH_CAP_FILE_CACHE
|
641 CEPH_CAP_FILE_BUFFER
)) ||
642 mapping_mapped(inode
->i_mapping
) ||
643 __ceph_caps_file_wanted(ci
)) {
644 ci
->i_truncate_pending
++;
649 if (ceph_seq_cmp(truncate_seq
, ci
->i_truncate_seq
) >= 0 &&
650 ci
->i_truncate_size
!= truncate_size
) {
651 dout("truncate_size %lld -> %llu\n", ci
->i_truncate_size
,
653 ci
->i_truncate_size
= truncate_size
;
657 ceph_fscache_invalidate(inode
);
662 void ceph_fill_file_time(struct inode
*inode
, int issued
,
663 u64 time_warp_seq
, struct timespec64
*ctime
,
664 struct timespec64
*mtime
, struct timespec64
*atime
)
666 struct ceph_inode_info
*ci
= ceph_inode(inode
);
669 if (issued
& (CEPH_CAP_FILE_EXCL
|
671 CEPH_CAP_FILE_BUFFER
|
673 CEPH_CAP_XATTR_EXCL
)) {
674 if (ci
->i_version
== 0 ||
675 timespec64_compare(ctime
, &inode
->i_ctime
) > 0) {
676 dout("ctime %lld.%09ld -> %lld.%09ld inc w/ cap\n",
677 inode
->i_ctime
.tv_sec
, inode
->i_ctime
.tv_nsec
,
678 ctime
->tv_sec
, ctime
->tv_nsec
);
679 inode
->i_ctime
= *ctime
;
681 if (ci
->i_version
== 0 ||
682 ceph_seq_cmp(time_warp_seq
, ci
->i_time_warp_seq
) > 0) {
683 /* the MDS did a utimes() */
684 dout("mtime %lld.%09ld -> %lld.%09ld "
686 inode
->i_mtime
.tv_sec
, inode
->i_mtime
.tv_nsec
,
687 mtime
->tv_sec
, mtime
->tv_nsec
,
688 ci
->i_time_warp_seq
, (int)time_warp_seq
);
690 inode
->i_mtime
= *mtime
;
691 inode
->i_atime
= *atime
;
692 ci
->i_time_warp_seq
= time_warp_seq
;
693 } else if (time_warp_seq
== ci
->i_time_warp_seq
) {
694 /* nobody did utimes(); take the max */
695 if (timespec64_compare(mtime
, &inode
->i_mtime
) > 0) {
696 dout("mtime %lld.%09ld -> %lld.%09ld inc\n",
697 inode
->i_mtime
.tv_sec
,
698 inode
->i_mtime
.tv_nsec
,
699 mtime
->tv_sec
, mtime
->tv_nsec
);
700 inode
->i_mtime
= *mtime
;
702 if (timespec64_compare(atime
, &inode
->i_atime
) > 0) {
703 dout("atime %lld.%09ld -> %lld.%09ld inc\n",
704 inode
->i_atime
.tv_sec
,
705 inode
->i_atime
.tv_nsec
,
706 atime
->tv_sec
, atime
->tv_nsec
);
707 inode
->i_atime
= *atime
;
709 } else if (issued
& CEPH_CAP_FILE_EXCL
) {
710 /* we did a utimes(); ignore mds values */
715 /* we have no write|excl caps; whatever the MDS says is true */
716 if (ceph_seq_cmp(time_warp_seq
, ci
->i_time_warp_seq
) >= 0) {
717 inode
->i_ctime
= *ctime
;
718 inode
->i_mtime
= *mtime
;
719 inode
->i_atime
= *atime
;
720 ci
->i_time_warp_seq
= time_warp_seq
;
725 if (warn
) /* time_warp_seq shouldn't go backwards */
726 dout("%p mds time_warp_seq %llu < %u\n",
727 inode
, time_warp_seq
, ci
->i_time_warp_seq
);
731 * Populate an inode based on info from mds. May be called on new or
734 static int fill_inode(struct inode
*inode
, struct page
*locked_page
,
735 struct ceph_mds_reply_info_in
*iinfo
,
736 struct ceph_mds_reply_dirfrag
*dirinfo
,
737 struct ceph_mds_session
*session
,
738 unsigned long ttl_from
, int cap_fmode
,
739 struct ceph_cap_reservation
*caps_reservation
)
741 struct ceph_mds_client
*mdsc
= ceph_inode_to_client(inode
)->mdsc
;
742 struct ceph_mds_reply_inode
*info
= iinfo
->in
;
743 struct ceph_inode_info
*ci
= ceph_inode(inode
);
744 int issued
, new_issued
, info_caps
;
745 struct timespec64 mtime
, atime
, ctime
;
746 struct ceph_buffer
*xattr_blob
= NULL
;
747 struct ceph_string
*pool_ns
= NULL
;
748 struct ceph_cap
*new_cap
= NULL
;
751 bool queue_trunc
= false;
752 bool new_version
= false;
753 bool fill_inline
= false;
755 dout("fill_inode %p ino %llx.%llx v %llu had %llu\n",
756 inode
, ceph_vinop(inode
), le64_to_cpu(info
->version
),
759 info_caps
= le32_to_cpu(info
->cap
.caps
);
761 /* prealloc new cap struct */
762 if (info_caps
&& ceph_snap(inode
) == CEPH_NOSNAP
)
763 new_cap
= ceph_get_cap(mdsc
, caps_reservation
);
766 * prealloc xattr data, if it looks like we'll need it. only
767 * if len > 4 (meaning there are actually xattrs; the first 4
768 * bytes are the xattr count).
770 if (iinfo
->xattr_len
> 4) {
771 xattr_blob
= ceph_buffer_new(iinfo
->xattr_len
, GFP_NOFS
);
773 pr_err("fill_inode ENOMEM xattr blob %d bytes\n",
777 if (iinfo
->pool_ns_len
> 0)
778 pool_ns
= ceph_find_or_create_string(iinfo
->pool_ns_data
,
781 if (ceph_snap(inode
) != CEPH_NOSNAP
&& !ci
->i_snapid_map
)
782 ci
->i_snapid_map
= ceph_get_snapid_map(mdsc
, ceph_snap(inode
));
784 spin_lock(&ci
->i_ceph_lock
);
787 * provided version will be odd if inode value is projected,
788 * even if stable. skip the update if we have newer stable
789 * info (ours>=theirs, e.g. due to racing mds replies), unless
790 * we are getting projected (unstable) info (in which case the
791 * version is odd, and we want ours>theirs).
797 if (ci
->i_version
== 0 ||
798 ((info
->cap
.flags
& CEPH_CAP_FLAG_AUTH
) &&
799 le64_to_cpu(info
->version
) > (ci
->i_version
& ~1)))
802 __ceph_caps_issued(ci
, &issued
);
803 issued
|= __ceph_caps_dirty(ci
);
804 new_issued
= ~issued
& info_caps
;
807 inode
->i_rdev
= le32_to_cpu(info
->rdev
);
808 inode
->i_blkbits
= fls(le32_to_cpu(info
->layout
.fl_stripe_unit
)) - 1;
810 __ceph_update_quota(ci
, iinfo
->max_bytes
, iinfo
->max_files
);
812 if ((new_version
|| (new_issued
& CEPH_CAP_AUTH_SHARED
)) &&
813 (issued
& CEPH_CAP_AUTH_EXCL
) == 0) {
814 inode
->i_mode
= le32_to_cpu(info
->mode
);
815 inode
->i_uid
= make_kuid(&init_user_ns
, le32_to_cpu(info
->uid
));
816 inode
->i_gid
= make_kgid(&init_user_ns
, le32_to_cpu(info
->gid
));
817 dout("%p mode 0%o uid.gid %d.%d\n", inode
, inode
->i_mode
,
818 from_kuid(&init_user_ns
, inode
->i_uid
),
819 from_kgid(&init_user_ns
, inode
->i_gid
));
822 if ((new_version
|| (new_issued
& CEPH_CAP_LINK_SHARED
)) &&
823 (issued
& CEPH_CAP_LINK_EXCL
) == 0)
824 set_nlink(inode
, le32_to_cpu(info
->nlink
));
826 if (new_version
|| (new_issued
& CEPH_CAP_ANY_RD
)) {
827 /* be careful with mtime, atime, size */
828 ceph_decode_timespec64(&atime
, &info
->atime
);
829 ceph_decode_timespec64(&mtime
, &info
->mtime
);
830 ceph_decode_timespec64(&ctime
, &info
->ctime
);
831 ceph_fill_file_time(inode
, issued
,
832 le32_to_cpu(info
->time_warp_seq
),
833 &ctime
, &mtime
, &atime
);
836 if (new_version
|| (info_caps
& CEPH_CAP_FILE_SHARED
)) {
837 ci
->i_files
= le64_to_cpu(info
->files
);
838 ci
->i_subdirs
= le64_to_cpu(info
->subdirs
);
842 (new_issued
& (CEPH_CAP_ANY_FILE_RD
| CEPH_CAP_ANY_FILE_WR
))) {
843 s64 old_pool
= ci
->i_layout
.pool_id
;
844 struct ceph_string
*old_ns
;
846 ceph_file_layout_from_legacy(&ci
->i_layout
, &info
->layout
);
847 old_ns
= rcu_dereference_protected(ci
->i_layout
.pool_ns
,
848 lockdep_is_held(&ci
->i_ceph_lock
));
849 rcu_assign_pointer(ci
->i_layout
.pool_ns
, pool_ns
);
851 if (ci
->i_layout
.pool_id
!= old_pool
|| pool_ns
!= old_ns
)
852 ci
->i_ceph_flags
&= ~CEPH_I_POOL_PERM
;
856 queue_trunc
= ceph_fill_file_size(inode
, issued
,
857 le32_to_cpu(info
->truncate_seq
),
858 le64_to_cpu(info
->truncate_size
),
859 le64_to_cpu(info
->size
));
860 /* only update max_size on auth cap */
861 if ((info
->cap
.flags
& CEPH_CAP_FLAG_AUTH
) &&
862 ci
->i_max_size
!= le64_to_cpu(info
->max_size
)) {
863 dout("max_size %lld -> %llu\n", ci
->i_max_size
,
864 le64_to_cpu(info
->max_size
));
865 ci
->i_max_size
= le64_to_cpu(info
->max_size
);
869 /* layout and rstat are not tracked by capability, update them if
870 * the inode info is from auth mds */
871 if (new_version
|| (info
->cap
.flags
& CEPH_CAP_FLAG_AUTH
)) {
872 if (S_ISDIR(inode
->i_mode
)) {
873 ci
->i_dir_layout
= iinfo
->dir_layout
;
874 ci
->i_rbytes
= le64_to_cpu(info
->rbytes
);
875 ci
->i_rfiles
= le64_to_cpu(info
->rfiles
);
876 ci
->i_rsubdirs
= le64_to_cpu(info
->rsubdirs
);
877 ci
->i_dir_pin
= iinfo
->dir_pin
;
878 ceph_decode_timespec64(&ci
->i_rctime
, &info
->rctime
);
883 /* note that if i_xattrs.len <= 4, i_xattrs.data will still be NULL. */
884 if ((ci
->i_xattrs
.version
== 0 || !(issued
& CEPH_CAP_XATTR_EXCL
)) &&
885 le64_to_cpu(info
->xattr_version
) > ci
->i_xattrs
.version
) {
886 if (ci
->i_xattrs
.blob
)
887 ceph_buffer_put(ci
->i_xattrs
.blob
);
888 ci
->i_xattrs
.blob
= xattr_blob
;
890 memcpy(ci
->i_xattrs
.blob
->vec
.iov_base
,
891 iinfo
->xattr_data
, iinfo
->xattr_len
);
892 ci
->i_xattrs
.version
= le64_to_cpu(info
->xattr_version
);
893 ceph_forget_all_cached_acls(inode
);
897 /* finally update i_version */
898 if (le64_to_cpu(info
->version
) > ci
->i_version
)
899 ci
->i_version
= le64_to_cpu(info
->version
);
901 inode
->i_mapping
->a_ops
= &ceph_aops
;
903 switch (inode
->i_mode
& S_IFMT
) {
908 inode
->i_blkbits
= PAGE_SHIFT
;
909 init_special_inode(inode
, inode
->i_mode
, inode
->i_rdev
);
910 inode
->i_op
= &ceph_file_iops
;
913 inode
->i_op
= &ceph_file_iops
;
914 inode
->i_fop
= &ceph_file_fops
;
917 inode
->i_op
= &ceph_symlink_iops
;
918 if (!ci
->i_symlink
) {
919 u32 symlen
= iinfo
->symlink_len
;
922 spin_unlock(&ci
->i_ceph_lock
);
924 if (symlen
!= i_size_read(inode
)) {
925 pr_err("fill_inode %llx.%llx BAD symlink "
926 "size %lld\n", ceph_vinop(inode
),
928 i_size_write(inode
, symlen
);
929 inode
->i_blocks
= calc_inode_blocks(symlen
);
933 sym
= kstrndup(iinfo
->symlink
, symlen
, GFP_NOFS
);
937 spin_lock(&ci
->i_ceph_lock
);
941 kfree(sym
); /* lost a race */
943 inode
->i_link
= ci
->i_symlink
;
946 inode
->i_op
= &ceph_dir_iops
;
947 inode
->i_fop
= &ceph_dir_fops
;
950 pr_err("fill_inode %llx.%llx BAD mode 0%o\n",
951 ceph_vinop(inode
), inode
->i_mode
);
954 /* were we issued a capability? */
956 if (ceph_snap(inode
) == CEPH_NOSNAP
) {
957 ceph_add_cap(inode
, session
,
958 le64_to_cpu(info
->cap
.cap_id
),
959 cap_fmode
, info_caps
,
960 le32_to_cpu(info
->cap
.wanted
),
961 le32_to_cpu(info
->cap
.seq
),
962 le32_to_cpu(info
->cap
.mseq
),
963 le64_to_cpu(info
->cap
.realm
),
964 info
->cap
.flags
, &new_cap
);
966 /* set dir completion flag? */
967 if (S_ISDIR(inode
->i_mode
) &&
968 ci
->i_files
== 0 && ci
->i_subdirs
== 0 &&
969 (info_caps
& CEPH_CAP_FILE_SHARED
) &&
970 (issued
& CEPH_CAP_FILE_EXCL
) == 0 &&
971 !__ceph_dir_is_complete(ci
)) {
972 dout(" marking %p complete (empty)\n", inode
);
973 i_size_write(inode
, 0);
974 __ceph_dir_set_complete(ci
,
975 atomic64_read(&ci
->i_release_count
),
976 atomic64_read(&ci
->i_ordered_count
));
981 dout(" %p got snap_caps %s\n", inode
,
982 ceph_cap_string(info_caps
));
983 ci
->i_snap_caps
|= info_caps
;
985 __ceph_get_fmode(ci
, cap_fmode
);
987 } else if (cap_fmode
>= 0) {
988 pr_warn("mds issued no caps on %llx.%llx\n",
990 __ceph_get_fmode(ci
, cap_fmode
);
993 if (iinfo
->inline_version
> 0 &&
994 iinfo
->inline_version
>= ci
->i_inline_version
) {
995 int cache_caps
= CEPH_CAP_FILE_CACHE
| CEPH_CAP_FILE_LAZYIO
;
996 ci
->i_inline_version
= iinfo
->inline_version
;
997 if (ci
->i_inline_version
!= CEPH_INLINE_NONE
&&
998 (locked_page
|| (info_caps
& cache_caps
)))
1002 spin_unlock(&ci
->i_ceph_lock
);
1005 ceph_fill_inline_data(inode
, locked_page
,
1006 iinfo
->inline_data
, iinfo
->inline_len
);
1009 wake_up_all(&ci
->i_cap_wq
);
1011 /* queue truncate if we saw i_size decrease */
1013 ceph_queue_vmtruncate(inode
);
1015 /* populate frag tree */
1016 if (S_ISDIR(inode
->i_mode
))
1017 ceph_fill_fragtree(inode
, &info
->fragtree
, dirinfo
);
1019 /* update delegation info? */
1021 ceph_fill_dirfrag(inode
, dirinfo
);
1026 ceph_put_cap(mdsc
, new_cap
);
1028 ceph_buffer_put(xattr_blob
);
1029 ceph_put_string(pool_ns
);
1034 * caller should hold session s_mutex.
1036 static void update_dentry_lease(struct dentry
*dentry
,
1037 struct ceph_mds_reply_lease
*lease
,
1038 struct ceph_mds_session
*session
,
1039 unsigned long from_time
,
1040 struct ceph_vino
*tgt_vino
,
1041 struct ceph_vino
*dir_vino
)
1043 struct ceph_dentry_info
*di
= ceph_dentry(dentry
);
1044 long unsigned duration
= le32_to_cpu(lease
->duration_ms
);
1045 long unsigned ttl
= from_time
+ (duration
* HZ
) / 1000;
1046 long unsigned half_ttl
= from_time
+ (duration
* HZ
/ 2) / 1000;
1048 struct ceph_mds_session
*old_lease_session
= NULL
;
1051 * Make sure dentry's inode matches tgt_vino. NULL tgt_vino means that
1052 * we expect a negative dentry.
1054 if (!tgt_vino
&& d_really_is_positive(dentry
))
1057 if (tgt_vino
&& (d_really_is_negative(dentry
) ||
1058 !ceph_ino_compare(d_inode(dentry
), tgt_vino
)))
1061 spin_lock(&dentry
->d_lock
);
1062 dout("update_dentry_lease %p duration %lu ms ttl %lu\n",
1063 dentry
, duration
, ttl
);
1065 dir
= d_inode(dentry
->d_parent
);
1067 /* make sure parent matches dir_vino */
1068 if (!ceph_ino_compare(dir
, dir_vino
))
1071 /* only track leases on regular dentries */
1072 if (ceph_snap(dir
) != CEPH_NOSNAP
)
1075 di
->lease_shared_gen
= atomic_read(&ceph_inode(dir
)->i_shared_gen
);
1076 if (duration
== 0) {
1077 __ceph_dentry_dir_lease_touch(di
);
1081 if (di
->lease_gen
== session
->s_cap_gen
&&
1082 time_before(ttl
, di
->time
))
1083 goto out_unlock
; /* we already have a newer lease. */
1085 if (di
->lease_session
&& di
->lease_session
!= session
) {
1086 old_lease_session
= di
->lease_session
;
1087 di
->lease_session
= NULL
;
1090 if (!di
->lease_session
)
1091 di
->lease_session
= ceph_get_mds_session(session
);
1092 di
->lease_gen
= session
->s_cap_gen
;
1093 di
->lease_seq
= le32_to_cpu(lease
->seq
);
1094 di
->lease_renew_after
= half_ttl
;
1095 di
->lease_renew_from
= 0;
1098 __ceph_dentry_lease_touch(di
);
1100 spin_unlock(&dentry
->d_lock
);
1101 if (old_lease_session
)
1102 ceph_put_mds_session(old_lease_session
);
1106 * splice a dentry to an inode.
1107 * caller must hold directory i_mutex for this to be safe.
1109 static int splice_dentry(struct dentry
**pdn
, struct inode
*in
)
1111 struct dentry
*dn
= *pdn
;
1112 struct dentry
*realdn
;
1114 BUG_ON(d_inode(dn
));
1116 if (S_ISDIR(in
->i_mode
)) {
1117 /* If inode is directory, d_splice_alias() below will remove
1118 * 'realdn' from its origin parent. We need to ensure that
1119 * origin parent's readdir cache will not reference 'realdn'
1121 realdn
= d_find_any_alias(in
);
1123 struct ceph_dentry_info
*di
= ceph_dentry(realdn
);
1124 spin_lock(&realdn
->d_lock
);
1126 realdn
->d_op
->d_prune(realdn
);
1129 di
->lease_shared_gen
= 0;
1132 spin_unlock(&realdn
->d_lock
);
1137 /* dn must be unhashed */
1138 if (!d_unhashed(dn
))
1140 realdn
= d_splice_alias(in
, dn
);
1141 if (IS_ERR(realdn
)) {
1142 pr_err("splice_dentry error %ld %p inode %p ino %llx.%llx\n",
1143 PTR_ERR(realdn
), dn
, in
, ceph_vinop(in
));
1144 return PTR_ERR(realdn
);
1148 dout("dn %p (%d) spliced with %p (%d) "
1149 "inode %p ino %llx.%llx\n",
1151 realdn
, d_count(realdn
),
1152 d_inode(realdn
), ceph_vinop(d_inode(realdn
)));
1156 BUG_ON(!ceph_dentry(dn
));
1157 dout("dn %p attached to %p ino %llx.%llx\n",
1158 dn
, d_inode(dn
), ceph_vinop(d_inode(dn
)));
1163 static int d_name_cmp(struct dentry
*dentry
, const char *name
, size_t len
)
1167 /* take d_lock to ensure dentry->d_name stability */
1168 spin_lock(&dentry
->d_lock
);
1169 ret
= dentry
->d_name
.len
- len
;
1171 ret
= memcmp(dentry
->d_name
.name
, name
, len
);
1172 spin_unlock(&dentry
->d_lock
);
1177 * Incorporate results into the local cache. This is either just
1178 * one inode, or a directory, dentry, and possibly linked-to inode (e.g.,
1181 * A reply may contain
1182 * a directory inode along with a dentry.
1183 * and/or a target inode
1185 * Called with snap_rwsem (read).
1187 int ceph_fill_trace(struct super_block
*sb
, struct ceph_mds_request
*req
)
1189 struct ceph_mds_session
*session
= req
->r_session
;
1190 struct ceph_mds_reply_info_parsed
*rinfo
= &req
->r_reply_info
;
1191 struct inode
*in
= NULL
;
1192 struct ceph_vino tvino
, dvino
;
1193 struct ceph_fs_client
*fsc
= ceph_sb_to_client(sb
);
1196 dout("fill_trace %p is_dentry %d is_target %d\n", req
,
1197 rinfo
->head
->is_dentry
, rinfo
->head
->is_target
);
1199 if (!rinfo
->head
->is_target
&& !rinfo
->head
->is_dentry
) {
1200 dout("fill_trace reply is empty!\n");
1201 if (rinfo
->head
->result
== 0 && req
->r_parent
)
1202 ceph_invalidate_dir_request(req
);
1206 if (rinfo
->head
->is_dentry
) {
1207 struct inode
*dir
= req
->r_parent
;
1210 err
= fill_inode(dir
, NULL
,
1211 &rinfo
->diri
, rinfo
->dirfrag
,
1212 session
, req
->r_request_started
, -1,
1213 &req
->r_caps_reservation
);
1220 if (dir
&& req
->r_op
== CEPH_MDS_OP_LOOKUPNAME
&&
1221 test_bit(CEPH_MDS_R_PARENT_LOCKED
, &req
->r_req_flags
) &&
1222 !test_bit(CEPH_MDS_R_ABORTED
, &req
->r_req_flags
)) {
1224 struct dentry
*dn
, *parent
;
1226 BUG_ON(!rinfo
->head
->is_target
);
1227 BUG_ON(req
->r_dentry
);
1229 parent
= d_find_any_alias(dir
);
1232 dname
.name
= rinfo
->dname
;
1233 dname
.len
= rinfo
->dname_len
;
1234 dname
.hash
= full_name_hash(parent
, dname
.name
, dname
.len
);
1235 tvino
.ino
= le64_to_cpu(rinfo
->targeti
.in
->ino
);
1236 tvino
.snap
= le64_to_cpu(rinfo
->targeti
.in
->snapid
);
1238 dn
= d_lookup(parent
, &dname
);
1239 dout("d_lookup on parent=%p name=%.*s got %p\n",
1240 parent
, dname
.len
, dname
.name
, dn
);
1243 dn
= d_alloc(parent
, &dname
);
1244 dout("d_alloc %p '%.*s' = %p\n", parent
,
1245 dname
.len
, dname
.name
, dn
);
1252 } else if (d_really_is_positive(dn
) &&
1253 (ceph_ino(d_inode(dn
)) != tvino
.ino
||
1254 ceph_snap(d_inode(dn
)) != tvino
.snap
)) {
1255 dout(" dn %p points to wrong inode %p\n",
1257 ceph_dir_clear_ordered(dir
);
1268 if (rinfo
->head
->is_target
) {
1269 tvino
.ino
= le64_to_cpu(rinfo
->targeti
.in
->ino
);
1270 tvino
.snap
= le64_to_cpu(rinfo
->targeti
.in
->snapid
);
1272 in
= ceph_get_inode(sb
, tvino
);
1277 req
->r_target_inode
= in
;
1279 err
= fill_inode(in
, req
->r_locked_page
, &rinfo
->targeti
, NULL
,
1280 session
, req
->r_request_started
,
1281 (!test_bit(CEPH_MDS_R_ABORTED
, &req
->r_req_flags
) &&
1282 rinfo
->head
->result
== 0) ? req
->r_fmode
: -1,
1283 &req
->r_caps_reservation
);
1285 pr_err("fill_inode badness %p %llx.%llx\n",
1286 in
, ceph_vinop(in
));
1292 * ignore null lease/binding on snapdir ENOENT, or else we
1293 * will have trouble splicing in the virtual snapdir later
1295 if (rinfo
->head
->is_dentry
&&
1296 !test_bit(CEPH_MDS_R_ABORTED
, &req
->r_req_flags
) &&
1297 test_bit(CEPH_MDS_R_PARENT_LOCKED
, &req
->r_req_flags
) &&
1298 (rinfo
->head
->is_target
|| strncmp(req
->r_dentry
->d_name
.name
,
1299 fsc
->mount_options
->snapdir_name
,
1300 req
->r_dentry
->d_name
.len
))) {
1302 * lookup link rename : null -> possibly existing inode
1303 * mknod symlink mkdir : null -> new inode
1304 * unlink : linked -> null
1306 struct inode
*dir
= req
->r_parent
;
1307 struct dentry
*dn
= req
->r_dentry
;
1308 bool have_dir_cap
, have_lease
;
1312 BUG_ON(d_inode(dn
->d_parent
) != dir
);
1314 dvino
.ino
= le64_to_cpu(rinfo
->diri
.in
->ino
);
1315 dvino
.snap
= le64_to_cpu(rinfo
->diri
.in
->snapid
);
1317 BUG_ON(ceph_ino(dir
) != dvino
.ino
);
1318 BUG_ON(ceph_snap(dir
) != dvino
.snap
);
1320 /* do we have a lease on the whole dir? */
1322 (le32_to_cpu(rinfo
->diri
.in
->cap
.caps
) &
1323 CEPH_CAP_FILE_SHARED
);
1325 /* do we have a dn lease? */
1326 have_lease
= have_dir_cap
||
1327 le32_to_cpu(rinfo
->dlease
->duration_ms
);
1329 dout("fill_trace no dentry lease or dir cap\n");
1332 if (req
->r_old_dentry
&& req
->r_op
== CEPH_MDS_OP_RENAME
) {
1333 struct inode
*olddir
= req
->r_old_dentry_dir
;
1336 dout(" src %p '%pd' dst %p '%pd'\n",
1340 dout("fill_trace doing d_move %p -> %p\n",
1341 req
->r_old_dentry
, dn
);
1343 /* d_move screws up sibling dentries' offsets */
1344 ceph_dir_clear_ordered(dir
);
1345 ceph_dir_clear_ordered(olddir
);
1347 d_move(req
->r_old_dentry
, dn
);
1348 dout(" src %p '%pd' dst %p '%pd'\n",
1353 /* ensure target dentry is invalidated, despite
1354 rehashing bug in vfs_rename_dir */
1355 ceph_invalidate_dentry_lease(dn
);
1357 dout("dn %p gets new offset %lld\n", req
->r_old_dentry
,
1358 ceph_dentry(req
->r_old_dentry
)->offset
);
1360 /* swap r_dentry and r_old_dentry in case that
1361 * splice_dentry() gets called later. This is safe
1362 * because no other place will use them */
1363 req
->r_dentry
= req
->r_old_dentry
;
1364 req
->r_old_dentry
= dn
;
1369 if (!rinfo
->head
->is_target
) {
1370 dout("fill_trace null dentry\n");
1371 if (d_really_is_positive(dn
)) {
1372 dout("d_delete %p\n", dn
);
1373 ceph_dir_clear_ordered(dir
);
1375 } else if (have_lease
) {
1378 update_dentry_lease(dn
, rinfo
->dlease
,
1380 req
->r_request_started
,
1386 /* attach proper inode */
1387 if (d_really_is_negative(dn
)) {
1388 ceph_dir_clear_ordered(dir
);
1390 err
= splice_dentry(&req
->r_dentry
, in
);
1393 dn
= req
->r_dentry
; /* may have spliced */
1394 } else if (d_really_is_positive(dn
) && d_inode(dn
) != in
) {
1395 dout(" %p links to %p %llx.%llx, not %llx.%llx\n",
1396 dn
, d_inode(dn
), ceph_vinop(d_inode(dn
)),
1403 tvino
.ino
= le64_to_cpu(rinfo
->targeti
.in
->ino
);
1404 tvino
.snap
= le64_to_cpu(rinfo
->targeti
.in
->snapid
);
1405 update_dentry_lease(dn
, rinfo
->dlease
, session
,
1406 req
->r_request_started
,
1409 dout(" final dn %p\n", dn
);
1410 } else if ((req
->r_op
== CEPH_MDS_OP_LOOKUPSNAP
||
1411 req
->r_op
== CEPH_MDS_OP_MKSNAP
) &&
1412 !test_bit(CEPH_MDS_R_ABORTED
, &req
->r_req_flags
)) {
1413 struct inode
*dir
= req
->r_parent
;
1415 /* fill out a snapdir LOOKUPSNAP dentry */
1417 BUG_ON(ceph_snap(dir
) != CEPH_SNAPDIR
);
1418 BUG_ON(!req
->r_dentry
);
1419 dout(" linking snapped dir %p to dn %p\n", in
, req
->r_dentry
);
1420 ceph_dir_clear_ordered(dir
);
1422 err
= splice_dentry(&req
->r_dentry
, in
);
1425 } else if (rinfo
->head
->is_dentry
&&
1426 !d_name_cmp(req
->r_dentry
, rinfo
->dname
, rinfo
->dname_len
)) {
1427 struct ceph_vino
*ptvino
= NULL
;
1429 if ((le32_to_cpu(rinfo
->diri
.in
->cap
.caps
) & CEPH_CAP_FILE_SHARED
) ||
1430 le32_to_cpu(rinfo
->dlease
->duration_ms
)) {
1431 dvino
.ino
= le64_to_cpu(rinfo
->diri
.in
->ino
);
1432 dvino
.snap
= le64_to_cpu(rinfo
->diri
.in
->snapid
);
1434 if (rinfo
->head
->is_target
) {
1435 tvino
.ino
= le64_to_cpu(rinfo
->targeti
.in
->ino
);
1436 tvino
.snap
= le64_to_cpu(rinfo
->targeti
.in
->snapid
);
1440 update_dentry_lease(req
->r_dentry
, rinfo
->dlease
,
1441 session
, req
->r_request_started
, ptvino
,
1444 dout("%s: no dentry lease or dir cap\n", __func__
);
1448 dout("fill_trace done err=%d\n", err
);
1453 * Prepopulate our cache with readdir results, leases, etc.
1455 static int readdir_prepopulate_inodes_only(struct ceph_mds_request
*req
,
1456 struct ceph_mds_session
*session
)
1458 struct ceph_mds_reply_info_parsed
*rinfo
= &req
->r_reply_info
;
1461 for (i
= 0; i
< rinfo
->dir_nr
; i
++) {
1462 struct ceph_mds_reply_dir_entry
*rde
= rinfo
->dir_entries
+ i
;
1463 struct ceph_vino vino
;
1467 vino
.ino
= le64_to_cpu(rde
->inode
.in
->ino
);
1468 vino
.snap
= le64_to_cpu(rde
->inode
.in
->snapid
);
1470 in
= ceph_get_inode(req
->r_dentry
->d_sb
, vino
);
1473 dout("new_inode badness got %d\n", err
);
1476 rc
= fill_inode(in
, NULL
, &rde
->inode
, NULL
, session
,
1477 req
->r_request_started
, -1,
1478 &req
->r_caps_reservation
);
1480 pr_err("fill_inode badness on %p got %d\n", in
, rc
);
1489 void ceph_readdir_cache_release(struct ceph_readdir_cache_control
*ctl
)
1493 put_page(ctl
->page
);
1498 static int fill_readdir_cache(struct inode
*dir
, struct dentry
*dn
,
1499 struct ceph_readdir_cache_control
*ctl
,
1500 struct ceph_mds_request
*req
)
1502 struct ceph_inode_info
*ci
= ceph_inode(dir
);
1503 unsigned nsize
= PAGE_SIZE
/ sizeof(struct dentry
*);
1504 unsigned idx
= ctl
->index
% nsize
;
1505 pgoff_t pgoff
= ctl
->index
/ nsize
;
1507 if (!ctl
->page
|| pgoff
!= page_index(ctl
->page
)) {
1508 ceph_readdir_cache_release(ctl
);
1510 ctl
->page
= grab_cache_page(&dir
->i_data
, pgoff
);
1512 ctl
->page
= find_lock_page(&dir
->i_data
, pgoff
);
1515 return idx
== 0 ? -ENOMEM
: 0;
1517 /* reading/filling the cache are serialized by
1518 * i_mutex, no need to use page lock */
1519 unlock_page(ctl
->page
);
1520 ctl
->dentries
= kmap(ctl
->page
);
1522 memset(ctl
->dentries
, 0, PAGE_SIZE
);
1525 if (req
->r_dir_release_cnt
== atomic64_read(&ci
->i_release_count
) &&
1526 req
->r_dir_ordered_cnt
== atomic64_read(&ci
->i_ordered_count
)) {
1527 dout("readdir cache dn %p idx %d\n", dn
, ctl
->index
);
1528 ctl
->dentries
[idx
] = dn
;
1531 dout("disable readdir cache\n");
1537 int ceph_readdir_prepopulate(struct ceph_mds_request
*req
,
1538 struct ceph_mds_session
*session
)
1540 struct dentry
*parent
= req
->r_dentry
;
1541 struct ceph_inode_info
*ci
= ceph_inode(d_inode(parent
));
1542 struct ceph_mds_reply_info_parsed
*rinfo
= &req
->r_reply_info
;
1546 int err
= 0, skipped
= 0, ret
, i
;
1547 struct ceph_mds_request_head
*rhead
= req
->r_request
->front
.iov_base
;
1548 u32 frag
= le32_to_cpu(rhead
->args
.readdir
.frag
);
1551 struct ceph_readdir_cache_control cache_ctl
= {};
1553 if (test_bit(CEPH_MDS_R_ABORTED
, &req
->r_req_flags
))
1554 return readdir_prepopulate_inodes_only(req
, session
);
1556 if (rinfo
->hash_order
) {
1558 last_hash
= ceph_str_hash(ci
->i_dir_layout
.dl_dir_hash
,
1560 strlen(req
->r_path2
));
1561 last_hash
= ceph_frag_value(last_hash
);
1562 } else if (rinfo
->offset_hash
) {
1563 /* mds understands offset_hash */
1564 WARN_ON_ONCE(req
->r_readdir_offset
!= 2);
1565 last_hash
= le32_to_cpu(rhead
->args
.readdir
.offset_hash
);
1569 if (rinfo
->dir_dir
&&
1570 le32_to_cpu(rinfo
->dir_dir
->frag
) != frag
) {
1571 dout("readdir_prepopulate got new frag %x -> %x\n",
1572 frag
, le32_to_cpu(rinfo
->dir_dir
->frag
));
1573 frag
= le32_to_cpu(rinfo
->dir_dir
->frag
);
1574 if (!rinfo
->hash_order
)
1575 req
->r_readdir_offset
= 2;
1578 if (le32_to_cpu(rinfo
->head
->op
) == CEPH_MDS_OP_LSSNAP
) {
1579 dout("readdir_prepopulate %d items under SNAPDIR dn %p\n",
1580 rinfo
->dir_nr
, parent
);
1582 dout("readdir_prepopulate %d items under dn %p\n",
1583 rinfo
->dir_nr
, parent
);
1585 ceph_fill_dirfrag(d_inode(parent
), rinfo
->dir_dir
);
1587 if (ceph_frag_is_leftmost(frag
) &&
1588 req
->r_readdir_offset
== 2 &&
1589 !(rinfo
->hash_order
&& last_hash
)) {
1590 /* note dir version at start of readdir so we can
1591 * tell if any dentries get dropped */
1592 req
->r_dir_release_cnt
=
1593 atomic64_read(&ci
->i_release_count
);
1594 req
->r_dir_ordered_cnt
=
1595 atomic64_read(&ci
->i_ordered_count
);
1596 req
->r_readdir_cache_idx
= 0;
1600 cache_ctl
.index
= req
->r_readdir_cache_idx
;
1601 fpos_offset
= req
->r_readdir_offset
;
1603 /* FIXME: release caps/leases if error occurs */
1604 for (i
= 0; i
< rinfo
->dir_nr
; i
++) {
1605 struct ceph_mds_reply_dir_entry
*rde
= rinfo
->dir_entries
+ i
;
1606 struct ceph_vino tvino
, dvino
;
1608 dname
.name
= rde
->name
;
1609 dname
.len
= rde
->name_len
;
1610 dname
.hash
= full_name_hash(parent
, dname
.name
, dname
.len
);
1612 tvino
.ino
= le64_to_cpu(rde
->inode
.in
->ino
);
1613 tvino
.snap
= le64_to_cpu(rde
->inode
.in
->snapid
);
1615 if (rinfo
->hash_order
) {
1616 u32 hash
= ceph_str_hash(ci
->i_dir_layout
.dl_dir_hash
,
1617 rde
->name
, rde
->name_len
);
1618 hash
= ceph_frag_value(hash
);
1619 if (hash
!= last_hash
)
1622 rde
->offset
= ceph_make_fpos(hash
, fpos_offset
++, true);
1624 rde
->offset
= ceph_make_fpos(frag
, fpos_offset
++, false);
1628 dn
= d_lookup(parent
, &dname
);
1629 dout("d_lookup on parent=%p name=%.*s got %p\n",
1630 parent
, dname
.len
, dname
.name
, dn
);
1633 dn
= d_alloc(parent
, &dname
);
1634 dout("d_alloc %p '%.*s' = %p\n", parent
,
1635 dname
.len
, dname
.name
, dn
);
1637 dout("d_alloc badness\n");
1641 } else if (d_really_is_positive(dn
) &&
1642 (ceph_ino(d_inode(dn
)) != tvino
.ino
||
1643 ceph_snap(d_inode(dn
)) != tvino
.snap
)) {
1644 struct ceph_dentry_info
*di
= ceph_dentry(dn
);
1645 dout(" dn %p points to wrong inode %p\n",
1648 spin_lock(&dn
->d_lock
);
1649 if (di
->offset
> 0 &&
1650 di
->lease_shared_gen
==
1651 atomic_read(&ci
->i_shared_gen
)) {
1652 __ceph_dir_clear_ordered(ci
);
1655 spin_unlock(&dn
->d_lock
);
1663 if (d_really_is_positive(dn
)) {
1666 in
= ceph_get_inode(parent
->d_sb
, tvino
);
1668 dout("new_inode badness\n");
1676 ret
= fill_inode(in
, NULL
, &rde
->inode
, NULL
, session
,
1677 req
->r_request_started
, -1,
1678 &req
->r_caps_reservation
);
1680 pr_err("fill_inode badness on %p\n", in
);
1681 if (d_really_is_negative(dn
))
1688 if (d_really_is_negative(dn
)) {
1689 if (ceph_security_xattr_deadlock(in
)) {
1690 dout(" skip splicing dn %p to inode %p"
1691 " (security xattr deadlock)\n", dn
, in
);
1697 err
= splice_dentry(&dn
, in
);
1702 ceph_dentry(dn
)->offset
= rde
->offset
;
1704 dvino
= ceph_vino(d_inode(parent
));
1705 update_dentry_lease(dn
, rde
->lease
, req
->r_session
,
1706 req
->r_request_started
, &tvino
, &dvino
);
1708 if (err
== 0 && skipped
== 0 && cache_ctl
.index
>= 0) {
1709 ret
= fill_readdir_cache(d_inode(parent
), dn
,
1718 if (err
== 0 && skipped
== 0) {
1719 set_bit(CEPH_MDS_R_DID_PREPOPULATE
, &req
->r_req_flags
);
1720 req
->r_readdir_cache_idx
= cache_ctl
.index
;
1722 ceph_readdir_cache_release(&cache_ctl
);
1723 dout("readdir_prepopulate done\n");
1727 bool ceph_inode_set_size(struct inode
*inode
, loff_t size
)
1729 struct ceph_inode_info
*ci
= ceph_inode(inode
);
1732 spin_lock(&ci
->i_ceph_lock
);
1733 dout("set_size %p %llu -> %llu\n", inode
, inode
->i_size
, size
);
1734 i_size_write(inode
, size
);
1735 inode
->i_blocks
= calc_inode_blocks(size
);
1737 ret
= __ceph_should_report_size(ci
);
1739 spin_unlock(&ci
->i_ceph_lock
);
1744 * Write back inode data in a worker thread. (This can't be done
1745 * in the message handler context.)
1747 void ceph_queue_writeback(struct inode
*inode
)
1750 if (queue_work(ceph_inode_to_client(inode
)->wb_wq
,
1751 &ceph_inode(inode
)->i_wb_work
)) {
1752 dout("ceph_queue_writeback %p\n", inode
);
1754 dout("ceph_queue_writeback %p failed\n", inode
);
1759 static void ceph_writeback_work(struct work_struct
*work
)
1761 struct ceph_inode_info
*ci
= container_of(work
, struct ceph_inode_info
,
1763 struct inode
*inode
= &ci
->vfs_inode
;
1765 dout("writeback %p\n", inode
);
1766 filemap_fdatawrite(&inode
->i_data
);
1771 * queue an async invalidation
1773 void ceph_queue_invalidate(struct inode
*inode
)
1776 if (queue_work(ceph_inode_to_client(inode
)->pg_inv_wq
,
1777 &ceph_inode(inode
)->i_pg_inv_work
)) {
1778 dout("ceph_queue_invalidate %p\n", inode
);
1780 dout("ceph_queue_invalidate %p failed\n", inode
);
1786 * Invalidate inode pages in a worker thread. (This can't be done
1787 * in the message handler context.)
1789 static void ceph_invalidate_work(struct work_struct
*work
)
1791 struct ceph_inode_info
*ci
= container_of(work
, struct ceph_inode_info
,
1793 struct inode
*inode
= &ci
->vfs_inode
;
1794 struct ceph_fs_client
*fsc
= ceph_inode_to_client(inode
);
1798 mutex_lock(&ci
->i_truncate_mutex
);
1800 if (READ_ONCE(fsc
->mount_state
) == CEPH_MOUNT_SHUTDOWN
) {
1801 pr_warn_ratelimited("invalidate_pages %p %lld forced umount\n",
1802 inode
, ceph_ino(inode
));
1803 mapping_set_error(inode
->i_mapping
, -EIO
);
1804 truncate_pagecache(inode
, 0);
1805 mutex_unlock(&ci
->i_truncate_mutex
);
1809 spin_lock(&ci
->i_ceph_lock
);
1810 dout("invalidate_pages %p gen %d revoking %d\n", inode
,
1811 ci
->i_rdcache_gen
, ci
->i_rdcache_revoking
);
1812 if (ci
->i_rdcache_revoking
!= ci
->i_rdcache_gen
) {
1813 if (__ceph_caps_revoking_other(ci
, NULL
, CEPH_CAP_FILE_CACHE
))
1815 spin_unlock(&ci
->i_ceph_lock
);
1816 mutex_unlock(&ci
->i_truncate_mutex
);
1819 orig_gen
= ci
->i_rdcache_gen
;
1820 spin_unlock(&ci
->i_ceph_lock
);
1822 if (invalidate_inode_pages2(inode
->i_mapping
) < 0) {
1823 pr_err("invalidate_pages %p fails\n", inode
);
1826 spin_lock(&ci
->i_ceph_lock
);
1827 if (orig_gen
== ci
->i_rdcache_gen
&&
1828 orig_gen
== ci
->i_rdcache_revoking
) {
1829 dout("invalidate_pages %p gen %d successful\n", inode
,
1831 ci
->i_rdcache_revoking
--;
1834 dout("invalidate_pages %p gen %d raced, now %d revoking %d\n",
1835 inode
, orig_gen
, ci
->i_rdcache_gen
,
1836 ci
->i_rdcache_revoking
);
1837 if (__ceph_caps_revoking_other(ci
, NULL
, CEPH_CAP_FILE_CACHE
))
1840 spin_unlock(&ci
->i_ceph_lock
);
1841 mutex_unlock(&ci
->i_truncate_mutex
);
1844 ceph_check_caps(ci
, 0, NULL
);
1850 * called by trunc_wq;
1852 * We also truncate in a separate thread as well.
1854 static void ceph_vmtruncate_work(struct work_struct
*work
)
1856 struct ceph_inode_info
*ci
= container_of(work
, struct ceph_inode_info
,
1858 struct inode
*inode
= &ci
->vfs_inode
;
1860 dout("vmtruncate_work %p\n", inode
);
1861 __ceph_do_pending_vmtruncate(inode
);
1866 * Queue an async vmtruncate. If we fail to queue work, we will handle
1867 * the truncation the next time we call __ceph_do_pending_vmtruncate.
1869 void ceph_queue_vmtruncate(struct inode
*inode
)
1871 struct ceph_inode_info
*ci
= ceph_inode(inode
);
1875 if (queue_work(ceph_sb_to_client(inode
->i_sb
)->trunc_wq
,
1876 &ci
->i_vmtruncate_work
)) {
1877 dout("ceph_queue_vmtruncate %p\n", inode
);
1879 dout("ceph_queue_vmtruncate %p failed, pending=%d\n",
1880 inode
, ci
->i_truncate_pending
);
1886 * Make sure any pending truncation is applied before doing anything
1887 * that may depend on it.
1889 void __ceph_do_pending_vmtruncate(struct inode
*inode
)
1891 struct ceph_inode_info
*ci
= ceph_inode(inode
);
1893 int wrbuffer_refs
, finish
= 0;
1895 mutex_lock(&ci
->i_truncate_mutex
);
1897 spin_lock(&ci
->i_ceph_lock
);
1898 if (ci
->i_truncate_pending
== 0) {
1899 dout("__do_pending_vmtruncate %p none pending\n", inode
);
1900 spin_unlock(&ci
->i_ceph_lock
);
1901 mutex_unlock(&ci
->i_truncate_mutex
);
1906 * make sure any dirty snapped pages are flushed before we
1907 * possibly truncate them.. so write AND block!
1909 if (ci
->i_wrbuffer_ref_head
< ci
->i_wrbuffer_ref
) {
1910 spin_unlock(&ci
->i_ceph_lock
);
1911 dout("__do_pending_vmtruncate %p flushing snaps first\n",
1913 filemap_write_and_wait_range(&inode
->i_data
, 0,
1914 inode
->i_sb
->s_maxbytes
);
1918 /* there should be no reader or writer */
1919 WARN_ON_ONCE(ci
->i_rd_ref
|| ci
->i_wr_ref
);
1921 to
= ci
->i_truncate_size
;
1922 wrbuffer_refs
= ci
->i_wrbuffer_ref
;
1923 dout("__do_pending_vmtruncate %p (%d) to %lld\n", inode
,
1924 ci
->i_truncate_pending
, to
);
1925 spin_unlock(&ci
->i_ceph_lock
);
1927 truncate_pagecache(inode
, to
);
1929 spin_lock(&ci
->i_ceph_lock
);
1930 if (to
== ci
->i_truncate_size
) {
1931 ci
->i_truncate_pending
= 0;
1934 spin_unlock(&ci
->i_ceph_lock
);
1938 mutex_unlock(&ci
->i_truncate_mutex
);
1940 if (wrbuffer_refs
== 0)
1941 ceph_check_caps(ci
, CHECK_CAPS_AUTHONLY
, NULL
);
1943 wake_up_all(&ci
->i_cap_wq
);
1949 static const struct inode_operations ceph_symlink_iops
= {
1950 .get_link
= simple_get_link
,
1951 .setattr
= ceph_setattr
,
1952 .getattr
= ceph_getattr
,
1953 .listxattr
= ceph_listxattr
,
1956 int __ceph_setattr(struct inode
*inode
, struct iattr
*attr
)
1958 struct ceph_inode_info
*ci
= ceph_inode(inode
);
1959 const unsigned int ia_valid
= attr
->ia_valid
;
1960 struct ceph_mds_request
*req
;
1961 struct ceph_mds_client
*mdsc
= ceph_sb_to_client(inode
->i_sb
)->mdsc
;
1962 struct ceph_cap_flush
*prealloc_cf
;
1964 int release
= 0, dirtied
= 0;
1967 int inode_dirty_flags
= 0;
1968 bool lock_snap_rwsem
= false;
1970 prealloc_cf
= ceph_alloc_cap_flush();
1974 req
= ceph_mdsc_create_request(mdsc
, CEPH_MDS_OP_SETATTR
,
1977 ceph_free_cap_flush(prealloc_cf
);
1978 return PTR_ERR(req
);
1981 spin_lock(&ci
->i_ceph_lock
);
1982 issued
= __ceph_caps_issued(ci
, NULL
);
1984 if (!ci
->i_head_snapc
&&
1985 (issued
& (CEPH_CAP_ANY_EXCL
| CEPH_CAP_FILE_WR
))) {
1986 lock_snap_rwsem
= true;
1987 if (!down_read_trylock(&mdsc
->snap_rwsem
)) {
1988 spin_unlock(&ci
->i_ceph_lock
);
1989 down_read(&mdsc
->snap_rwsem
);
1990 spin_lock(&ci
->i_ceph_lock
);
1991 issued
= __ceph_caps_issued(ci
, NULL
);
1995 dout("setattr %p issued %s\n", inode
, ceph_cap_string(issued
));
1997 if (ia_valid
& ATTR_UID
) {
1998 dout("setattr %p uid %d -> %d\n", inode
,
1999 from_kuid(&init_user_ns
, inode
->i_uid
),
2000 from_kuid(&init_user_ns
, attr
->ia_uid
));
2001 if (issued
& CEPH_CAP_AUTH_EXCL
) {
2002 inode
->i_uid
= attr
->ia_uid
;
2003 dirtied
|= CEPH_CAP_AUTH_EXCL
;
2004 } else if ((issued
& CEPH_CAP_AUTH_SHARED
) == 0 ||
2005 !uid_eq(attr
->ia_uid
, inode
->i_uid
)) {
2006 req
->r_args
.setattr
.uid
= cpu_to_le32(
2007 from_kuid(&init_user_ns
, attr
->ia_uid
));
2008 mask
|= CEPH_SETATTR_UID
;
2009 release
|= CEPH_CAP_AUTH_SHARED
;
2012 if (ia_valid
& ATTR_GID
) {
2013 dout("setattr %p gid %d -> %d\n", inode
,
2014 from_kgid(&init_user_ns
, inode
->i_gid
),
2015 from_kgid(&init_user_ns
, attr
->ia_gid
));
2016 if (issued
& CEPH_CAP_AUTH_EXCL
) {
2017 inode
->i_gid
= attr
->ia_gid
;
2018 dirtied
|= CEPH_CAP_AUTH_EXCL
;
2019 } else if ((issued
& CEPH_CAP_AUTH_SHARED
) == 0 ||
2020 !gid_eq(attr
->ia_gid
, inode
->i_gid
)) {
2021 req
->r_args
.setattr
.gid
= cpu_to_le32(
2022 from_kgid(&init_user_ns
, attr
->ia_gid
));
2023 mask
|= CEPH_SETATTR_GID
;
2024 release
|= CEPH_CAP_AUTH_SHARED
;
2027 if (ia_valid
& ATTR_MODE
) {
2028 dout("setattr %p mode 0%o -> 0%o\n", inode
, inode
->i_mode
,
2030 if (issued
& CEPH_CAP_AUTH_EXCL
) {
2031 inode
->i_mode
= attr
->ia_mode
;
2032 dirtied
|= CEPH_CAP_AUTH_EXCL
;
2033 } else if ((issued
& CEPH_CAP_AUTH_SHARED
) == 0 ||
2034 attr
->ia_mode
!= inode
->i_mode
) {
2035 inode
->i_mode
= attr
->ia_mode
;
2036 req
->r_args
.setattr
.mode
= cpu_to_le32(attr
->ia_mode
);
2037 mask
|= CEPH_SETATTR_MODE
;
2038 release
|= CEPH_CAP_AUTH_SHARED
;
2042 if (ia_valid
& ATTR_ATIME
) {
2043 dout("setattr %p atime %lld.%ld -> %lld.%ld\n", inode
,
2044 inode
->i_atime
.tv_sec
, inode
->i_atime
.tv_nsec
,
2045 attr
->ia_atime
.tv_sec
, attr
->ia_atime
.tv_nsec
);
2046 if (issued
& CEPH_CAP_FILE_EXCL
) {
2047 ci
->i_time_warp_seq
++;
2048 inode
->i_atime
= attr
->ia_atime
;
2049 dirtied
|= CEPH_CAP_FILE_EXCL
;
2050 } else if ((issued
& CEPH_CAP_FILE_WR
) &&
2051 timespec64_compare(&inode
->i_atime
,
2052 &attr
->ia_atime
) < 0) {
2053 inode
->i_atime
= attr
->ia_atime
;
2054 dirtied
|= CEPH_CAP_FILE_WR
;
2055 } else if ((issued
& CEPH_CAP_FILE_SHARED
) == 0 ||
2056 !timespec64_equal(&inode
->i_atime
, &attr
->ia_atime
)) {
2057 ceph_encode_timespec64(&req
->r_args
.setattr
.atime
,
2059 mask
|= CEPH_SETATTR_ATIME
;
2060 release
|= CEPH_CAP_FILE_SHARED
|
2061 CEPH_CAP_FILE_RD
| CEPH_CAP_FILE_WR
;
2064 if (ia_valid
& ATTR_MTIME
) {
2065 dout("setattr %p mtime %lld.%ld -> %lld.%ld\n", inode
,
2066 inode
->i_mtime
.tv_sec
, inode
->i_mtime
.tv_nsec
,
2067 attr
->ia_mtime
.tv_sec
, attr
->ia_mtime
.tv_nsec
);
2068 if (issued
& CEPH_CAP_FILE_EXCL
) {
2069 ci
->i_time_warp_seq
++;
2070 inode
->i_mtime
= attr
->ia_mtime
;
2071 dirtied
|= CEPH_CAP_FILE_EXCL
;
2072 } else if ((issued
& CEPH_CAP_FILE_WR
) &&
2073 timespec64_compare(&inode
->i_mtime
,
2074 &attr
->ia_mtime
) < 0) {
2075 inode
->i_mtime
= attr
->ia_mtime
;
2076 dirtied
|= CEPH_CAP_FILE_WR
;
2077 } else if ((issued
& CEPH_CAP_FILE_SHARED
) == 0 ||
2078 !timespec64_equal(&inode
->i_mtime
, &attr
->ia_mtime
)) {
2079 ceph_encode_timespec64(&req
->r_args
.setattr
.mtime
,
2081 mask
|= CEPH_SETATTR_MTIME
;
2082 release
|= CEPH_CAP_FILE_SHARED
|
2083 CEPH_CAP_FILE_RD
| CEPH_CAP_FILE_WR
;
2086 if (ia_valid
& ATTR_SIZE
) {
2087 dout("setattr %p size %lld -> %lld\n", inode
,
2088 inode
->i_size
, attr
->ia_size
);
2089 if ((issued
& CEPH_CAP_FILE_EXCL
) &&
2090 attr
->ia_size
> inode
->i_size
) {
2091 i_size_write(inode
, attr
->ia_size
);
2092 inode
->i_blocks
= calc_inode_blocks(attr
->ia_size
);
2093 ci
->i_reported_size
= attr
->ia_size
;
2094 dirtied
|= CEPH_CAP_FILE_EXCL
;
2095 } else if ((issued
& CEPH_CAP_FILE_SHARED
) == 0 ||
2096 attr
->ia_size
!= inode
->i_size
) {
2097 req
->r_args
.setattr
.size
= cpu_to_le64(attr
->ia_size
);
2098 req
->r_args
.setattr
.old_size
=
2099 cpu_to_le64(inode
->i_size
);
2100 mask
|= CEPH_SETATTR_SIZE
;
2101 release
|= CEPH_CAP_FILE_SHARED
| CEPH_CAP_FILE_EXCL
|
2102 CEPH_CAP_FILE_RD
| CEPH_CAP_FILE_WR
;
2106 /* these do nothing */
2107 if (ia_valid
& ATTR_CTIME
) {
2108 bool only
= (ia_valid
& (ATTR_SIZE
|ATTR_MTIME
|ATTR_ATIME
|
2109 ATTR_MODE
|ATTR_UID
|ATTR_GID
)) == 0;
2110 dout("setattr %p ctime %lld.%ld -> %lld.%ld (%s)\n", inode
,
2111 inode
->i_ctime
.tv_sec
, inode
->i_ctime
.tv_nsec
,
2112 attr
->ia_ctime
.tv_sec
, attr
->ia_ctime
.tv_nsec
,
2113 only
? "ctime only" : "ignored");
2116 * if kernel wants to dirty ctime but nothing else,
2117 * we need to choose a cap to dirty under, or do
2118 * a almost-no-op setattr
2120 if (issued
& CEPH_CAP_AUTH_EXCL
)
2121 dirtied
|= CEPH_CAP_AUTH_EXCL
;
2122 else if (issued
& CEPH_CAP_FILE_EXCL
)
2123 dirtied
|= CEPH_CAP_FILE_EXCL
;
2124 else if (issued
& CEPH_CAP_XATTR_EXCL
)
2125 dirtied
|= CEPH_CAP_XATTR_EXCL
;
2127 mask
|= CEPH_SETATTR_CTIME
;
2130 if (ia_valid
& ATTR_FILE
)
2131 dout("setattr %p ATTR_FILE ... hrm!\n", inode
);
2134 inode_dirty_flags
= __ceph_mark_dirty_caps(ci
, dirtied
,
2136 inode
->i_ctime
= attr
->ia_ctime
;
2140 spin_unlock(&ci
->i_ceph_lock
);
2141 if (lock_snap_rwsem
)
2142 up_read(&mdsc
->snap_rwsem
);
2144 if (inode_dirty_flags
)
2145 __mark_inode_dirty(inode
, inode_dirty_flags
);
2149 req
->r_inode
= inode
;
2151 req
->r_inode_drop
= release
;
2152 req
->r_args
.setattr
.mask
= cpu_to_le32(mask
);
2153 req
->r_num_caps
= 1;
2154 req
->r_stamp
= attr
->ia_ctime
;
2155 err
= ceph_mdsc_do_request(mdsc
, NULL
, req
);
2157 dout("setattr %p result=%d (%s locally, %d remote)\n", inode
, err
,
2158 ceph_cap_string(dirtied
), mask
);
2160 ceph_mdsc_put_request(req
);
2161 ceph_free_cap_flush(prealloc_cf
);
2163 if (err
>= 0 && (mask
& CEPH_SETATTR_SIZE
))
2164 __ceph_do_pending_vmtruncate(inode
);
2172 int ceph_setattr(struct dentry
*dentry
, struct iattr
*attr
)
2174 struct inode
*inode
= d_inode(dentry
);
2175 struct ceph_fs_client
*fsc
= ceph_inode_to_client(inode
);
2178 if (ceph_snap(inode
) != CEPH_NOSNAP
)
2181 err
= setattr_prepare(dentry
, attr
);
2185 if ((attr
->ia_valid
& ATTR_SIZE
) &&
2186 attr
->ia_size
> max(inode
->i_size
, fsc
->max_file_size
))
2189 if ((attr
->ia_valid
& ATTR_SIZE
) &&
2190 ceph_quota_is_max_bytes_exceeded(inode
, attr
->ia_size
))
2193 err
= __ceph_setattr(inode
, attr
);
2195 if (err
>= 0 && (attr
->ia_valid
& ATTR_MODE
))
2196 err
= posix_acl_chmod(inode
, attr
->ia_mode
);
2202 * Verify that we have a lease on the given mask. If not,
2203 * do a getattr against an mds.
2205 int __ceph_do_getattr(struct inode
*inode
, struct page
*locked_page
,
2206 int mask
, bool force
)
2208 struct ceph_fs_client
*fsc
= ceph_sb_to_client(inode
->i_sb
);
2209 struct ceph_mds_client
*mdsc
= fsc
->mdsc
;
2210 struct ceph_mds_request
*req
;
2214 if (ceph_snap(inode
) == CEPH_SNAPDIR
) {
2215 dout("do_getattr inode %p SNAPDIR\n", inode
);
2219 dout("do_getattr inode %p mask %s mode 0%o\n",
2220 inode
, ceph_cap_string(mask
), inode
->i_mode
);
2221 if (!force
&& ceph_caps_issued_mask(ceph_inode(inode
), mask
, 1))
2224 mode
= (mask
& CEPH_STAT_RSTAT
) ? USE_AUTH_MDS
: USE_ANY_MDS
;
2225 req
= ceph_mdsc_create_request(mdsc
, CEPH_MDS_OP_GETATTR
, mode
);
2227 return PTR_ERR(req
);
2228 req
->r_inode
= inode
;
2230 req
->r_num_caps
= 1;
2231 req
->r_args
.getattr
.mask
= cpu_to_le32(mask
);
2232 req
->r_locked_page
= locked_page
;
2233 err
= ceph_mdsc_do_request(mdsc
, NULL
, req
);
2234 if (locked_page
&& err
== 0) {
2235 u64 inline_version
= req
->r_reply_info
.targeti
.inline_version
;
2236 if (inline_version
== 0) {
2237 /* the reply is supposed to contain inline data */
2239 } else if (inline_version
== CEPH_INLINE_NONE
) {
2242 err
= req
->r_reply_info
.targeti
.inline_len
;
2245 ceph_mdsc_put_request(req
);
2246 dout("do_getattr result=%d\n", err
);
2252 * Check inode permissions. We verify we have a valid value for
2253 * the AUTH cap, then call the generic handler.
2255 int ceph_permission(struct inode
*inode
, int mask
)
2259 if (mask
& MAY_NOT_BLOCK
)
2262 err
= ceph_do_getattr(inode
, CEPH_CAP_AUTH_SHARED
, false);
2265 err
= generic_permission(inode
, mask
);
2270 * Get all attributes. Hopefully somedata we'll have a statlite()
2271 * and can limit the fields we require to be accurate.
2273 int ceph_getattr(const struct path
*path
, struct kstat
*stat
,
2274 u32 request_mask
, unsigned int flags
)
2276 struct inode
*inode
= d_inode(path
->dentry
);
2277 struct ceph_inode_info
*ci
= ceph_inode(inode
);
2280 err
= ceph_do_getattr(inode
, CEPH_STAT_CAP_INODE_ALL
, false);
2282 generic_fillattr(inode
, stat
);
2283 stat
->ino
= ceph_translate_ino(inode
->i_sb
, inode
->i_ino
);
2284 if (ceph_snap(inode
) == CEPH_NOSNAP
)
2285 stat
->dev
= inode
->i_sb
->s_dev
;
2287 stat
->dev
= ci
->i_snapid_map
? ci
->i_snapid_map
->dev
: 0;
2289 if (S_ISDIR(inode
->i_mode
)) {
2290 if (ceph_test_mount_opt(ceph_sb_to_client(inode
->i_sb
),
2292 stat
->size
= ci
->i_rbytes
;
2294 stat
->size
= ci
->i_files
+ ci
->i_subdirs
;
2296 stat
->blksize
= 65536;
2298 * Some applications rely on the number of st_nlink
2299 * value on directories to be either 0 (if unlinked)
2300 * or 2 + number of subdirectories.
2302 if (stat
->nlink
== 1)
2303 /* '.' + '..' + subdirs */
2304 stat
->nlink
= 1 + 1 + ci
->i_subdirs
;