Commit | Line | Data |
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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
3d14c5d2 | 2 | #include <linux/ceph/ceph_debug.h> |
355da1eb SW |
3 | |
4 | #include <linux/module.h> | |
5 | #include <linux/fs.h> | |
355da1eb SW |
6 | #include <linux/slab.h> |
7 | #include <linux/string.h> | |
8 | #include <linux/uaccess.h> | |
9 | #include <linux/kernel.h> | |
355da1eb SW |
10 | #include <linux/writeback.h> |
11 | #include <linux/vmalloc.h> | |
2cdeb1e4 | 12 | #include <linux/xattr.h> |
4db658ea | 13 | #include <linux/posix_acl.h> |
3e7fbe9c | 14 | #include <linux/random.h> |
a407846e | 15 | #include <linux/sort.h> |
a35ead31 | 16 | #include <linux/iversion.h> |
355da1eb SW |
17 | |
18 | #include "super.h" | |
3d14c5d2 | 19 | #include "mds_client.h" |
99ccbd22 | 20 | #include "cache.h" |
3d14c5d2 | 21 | #include <linux/ceph/decode.h> |
355da1eb SW |
22 | |
23 | /* | |
24 | * Ceph inode operations | |
25 | * | |
26 | * Implement basic inode helpers (get, alloc) and inode ops (getattr, | |
27 | * setattr, etc.), xattr helpers, and helpers for assimilating | |
28 | * metadata returned by the MDS into our cache. | |
29 | * | |
30 | * Also define helpers for doing asynchronous writeback, invalidation, | |
31 | * and truncation for the benefit of those who can't afford to block | |
32 | * (typically because they are in the message handler path). | |
33 | */ | |
34 | ||
35 | static const struct inode_operations ceph_symlink_iops; | |
36 | ||
1cf89a8d | 37 | static void ceph_inode_work(struct work_struct *work); |
355da1eb SW |
38 | |
39 | /* | |
40 | * find or create an inode, given the ceph ino number | |
41 | */ | |
ad1fee96 YS |
42 | static int ceph_set_ino_cb(struct inode *inode, void *data) |
43 | { | |
ebce3eb2 | 44 | struct ceph_inode_info *ci = ceph_inode(inode); |
1dd8d470 | 45 | struct ceph_mds_client *mdsc = ceph_sb_to_mdsc(inode->i_sb); |
ebce3eb2 JL |
46 | |
47 | ci->i_vino = *(struct ceph_vino *)data; | |
48 | inode->i_ino = ceph_vino_to_ino_t(ci->i_vino); | |
a35ead31 | 49 | inode_set_iversion_raw(inode, 0); |
1dd8d470 XL |
50 | percpu_counter_inc(&mdsc->metric.total_inodes); |
51 | ||
ad1fee96 YS |
52 | return 0; |
53 | } | |
54 | ||
355da1eb SW |
55 | struct inode *ceph_get_inode(struct super_block *sb, struct ceph_vino vino) |
56 | { | |
57 | struct inode *inode; | |
355da1eb | 58 | |
d4f6b31d JL |
59 | if (ceph_vino_is_reserved(vino)) |
60 | return ERR_PTR(-EREMOTEIO); | |
61 | ||
ebce3eb2 JL |
62 | inode = iget5_locked(sb, (unsigned long)vino.ino, ceph_ino_compare, |
63 | ceph_set_ino_cb, &vino); | |
d37b1d99 | 64 | if (!inode) |
355da1eb | 65 | return ERR_PTR(-ENOMEM); |
355da1eb | 66 | |
ebce3eb2 JL |
67 | dout("get_inode on %llu=%llx.%llx got %p new %d\n", ceph_present_inode(inode), |
68 | ceph_vinop(inode), inode, !!(inode->i_state & I_NEW)); | |
355da1eb SW |
69 | return inode; |
70 | } | |
71 | ||
72 | /* | |
73 | * get/constuct snapdir inode for a given directory | |
74 | */ | |
75 | struct inode *ceph_get_snapdir(struct inode *parent) | |
76 | { | |
77 | struct ceph_vino vino = { | |
78 | .ino = ceph_ino(parent), | |
79 | .snap = CEPH_SNAPDIR, | |
80 | }; | |
81 | struct inode *inode = ceph_get_inode(parent->i_sb, vino); | |
b377ff13 | 82 | struct ceph_inode_info *ci = ceph_inode(inode); |
355da1eb | 83 | |
355da1eb | 84 | if (IS_ERR(inode)) |
7e34bc52 | 85 | return inode; |
3e10a15f JL |
86 | |
87 | if (!S_ISDIR(parent->i_mode)) { | |
88 | pr_warn_once("bad snapdir parent type (mode=0%o)\n", | |
89 | parent->i_mode); | |
322794d3 | 90 | goto err; |
3e10a15f JL |
91 | } |
92 | ||
93 | if (!(inode->i_state & I_NEW) && !S_ISDIR(inode->i_mode)) { | |
94 | pr_warn_once("bad snapdir inode type (mode=0%o)\n", | |
95 | inode->i_mode); | |
322794d3 | 96 | goto err; |
3e10a15f JL |
97 | } |
98 | ||
355da1eb SW |
99 | inode->i_mode = parent->i_mode; |
100 | inode->i_uid = parent->i_uid; | |
101 | inode->i_gid = parent->i_gid; | |
ef915725 LH |
102 | inode->i_mtime = parent->i_mtime; |
103 | inode->i_ctime = parent->i_ctime; | |
104 | inode->i_atime = parent->i_atime; | |
b377ff13 | 105 | ci->i_rbytes = 0; |
ef915725 | 106 | ci->i_btime = ceph_inode(parent)->i_btime; |
893e456b | 107 | |
d3c51ae1 JL |
108 | if (inode->i_state & I_NEW) { |
109 | inode->i_op = &ceph_snapdir_iops; | |
110 | inode->i_fop = &ceph_snapdir_fops; | |
111 | ci->i_snap_caps = CEPH_CAP_PIN; /* so we can open */ | |
893e456b | 112 | unlock_new_inode(inode); |
d3c51ae1 | 113 | } |
893e456b | 114 | |
355da1eb | 115 | return inode; |
322794d3 XL |
116 | err: |
117 | if ((inode->i_state & I_NEW)) | |
118 | discard_new_inode(inode); | |
119 | else | |
120 | iput(inode); | |
121 | return ERR_PTR(-ENOTDIR); | |
355da1eb SW |
122 | } |
123 | ||
124 | const struct inode_operations ceph_file_iops = { | |
125 | .permission = ceph_permission, | |
126 | .setattr = ceph_setattr, | |
127 | .getattr = ceph_getattr, | |
355da1eb | 128 | .listxattr = ceph_listxattr, |
cac2f8b8 | 129 | .get_inode_acl = ceph_get_acl, |
72466d0b | 130 | .set_acl = ceph_set_acl, |
355da1eb SW |
131 | }; |
132 | ||
133 | ||
134 | /* | |
135 | * We use a 'frag tree' to keep track of the MDS's directory fragments | |
136 | * for a given inode (usually there is just a single fragment). We | |
137 | * need to know when a child frag is delegated to a new MDS, or when | |
138 | * it is flagged as replicated, so we can direct our requests | |
139 | * accordingly. | |
140 | */ | |
141 | ||
142 | /* | |
143 | * find/create a frag in the tree | |
144 | */ | |
145 | static struct ceph_inode_frag *__get_or_create_frag(struct ceph_inode_info *ci, | |
146 | u32 f) | |
147 | { | |
148 | struct rb_node **p; | |
149 | struct rb_node *parent = NULL; | |
150 | struct ceph_inode_frag *frag; | |
151 | int c; | |
152 | ||
153 | p = &ci->i_fragtree.rb_node; | |
154 | while (*p) { | |
155 | parent = *p; | |
156 | frag = rb_entry(parent, struct ceph_inode_frag, node); | |
157 | c = ceph_frag_compare(f, frag->frag); | |
158 | if (c < 0) | |
159 | p = &(*p)->rb_left; | |
160 | else if (c > 0) | |
161 | p = &(*p)->rb_right; | |
162 | else | |
163 | return frag; | |
164 | } | |
165 | ||
166 | frag = kmalloc(sizeof(*frag), GFP_NOFS); | |
51308806 | 167 | if (!frag) |
355da1eb | 168 | return ERR_PTR(-ENOMEM); |
51308806 | 169 | |
355da1eb SW |
170 | frag->frag = f; |
171 | frag->split_by = 0; | |
172 | frag->mds = -1; | |
173 | frag->ndist = 0; | |
174 | ||
175 | rb_link_node(&frag->node, parent, p); | |
176 | rb_insert_color(&frag->node, &ci->i_fragtree); | |
177 | ||
178 | dout("get_or_create_frag added %llx.%llx frag %x\n", | |
874c8ca1 | 179 | ceph_vinop(&ci->netfs.inode), f); |
355da1eb SW |
180 | return frag; |
181 | } | |
182 | ||
183 | /* | |
184 | * find a specific frag @f | |
185 | */ | |
186 | struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci, u32 f) | |
187 | { | |
188 | struct rb_node *n = ci->i_fragtree.rb_node; | |
189 | ||
190 | while (n) { | |
191 | struct ceph_inode_frag *frag = | |
192 | rb_entry(n, struct ceph_inode_frag, node); | |
193 | int c = ceph_frag_compare(f, frag->frag); | |
194 | if (c < 0) | |
195 | n = n->rb_left; | |
196 | else if (c > 0) | |
197 | n = n->rb_right; | |
198 | else | |
199 | return frag; | |
200 | } | |
201 | return NULL; | |
202 | } | |
203 | ||
204 | /* | |
205 | * Choose frag containing the given value @v. If @pfrag is | |
206 | * specified, copy the frag delegation info to the caller if | |
207 | * it is present. | |
208 | */ | |
3e7fbe9c YZ |
209 | static u32 __ceph_choose_frag(struct ceph_inode_info *ci, u32 v, |
210 | struct ceph_inode_frag *pfrag, int *found) | |
355da1eb SW |
211 | { |
212 | u32 t = ceph_frag_make(0, 0); | |
213 | struct ceph_inode_frag *frag; | |
214 | unsigned nway, i; | |
215 | u32 n; | |
216 | ||
217 | if (found) | |
218 | *found = 0; | |
219 | ||
355da1eb SW |
220 | while (1) { |
221 | WARN_ON(!ceph_frag_contains_value(t, v)); | |
222 | frag = __ceph_find_frag(ci, t); | |
223 | if (!frag) | |
224 | break; /* t is a leaf */ | |
225 | if (frag->split_by == 0) { | |
226 | if (pfrag) | |
227 | memcpy(pfrag, frag, sizeof(*pfrag)); | |
228 | if (found) | |
229 | *found = 1; | |
230 | break; | |
231 | } | |
232 | ||
233 | /* choose child */ | |
234 | nway = 1 << frag->split_by; | |
235 | dout("choose_frag(%x) %x splits by %d (%d ways)\n", v, t, | |
236 | frag->split_by, nway); | |
237 | for (i = 0; i < nway; i++) { | |
238 | n = ceph_frag_make_child(t, frag->split_by, i); | |
239 | if (ceph_frag_contains_value(n, v)) { | |
240 | t = n; | |
241 | break; | |
242 | } | |
243 | } | |
244 | BUG_ON(i == nway); | |
245 | } | |
246 | dout("choose_frag(%x) = %x\n", v, t); | |
247 | ||
355da1eb SW |
248 | return t; |
249 | } | |
250 | ||
3e7fbe9c YZ |
251 | u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v, |
252 | struct ceph_inode_frag *pfrag, int *found) | |
253 | { | |
254 | u32 ret; | |
255 | mutex_lock(&ci->i_fragtree_mutex); | |
256 | ret = __ceph_choose_frag(ci, v, pfrag, found); | |
257 | mutex_unlock(&ci->i_fragtree_mutex); | |
258 | return ret; | |
259 | } | |
260 | ||
355da1eb SW |
261 | /* |
262 | * Process dirfrag (delegation) info from the mds. Include leaf | |
263 | * fragment in tree ONLY if ndist > 0. Otherwise, only | |
264 | * branches/splits are included in i_fragtree) | |
265 | */ | |
266 | static int ceph_fill_dirfrag(struct inode *inode, | |
267 | struct ceph_mds_reply_dirfrag *dirinfo) | |
268 | { | |
269 | struct ceph_inode_info *ci = ceph_inode(inode); | |
270 | struct ceph_inode_frag *frag; | |
271 | u32 id = le32_to_cpu(dirinfo->frag); | |
272 | int mds = le32_to_cpu(dirinfo->auth); | |
273 | int ndist = le32_to_cpu(dirinfo->ndist); | |
8d08503c | 274 | int diri_auth = -1; |
355da1eb SW |
275 | int i; |
276 | int err = 0; | |
277 | ||
8d08503c YZ |
278 | spin_lock(&ci->i_ceph_lock); |
279 | if (ci->i_auth_cap) | |
280 | diri_auth = ci->i_auth_cap->mds; | |
281 | spin_unlock(&ci->i_ceph_lock); | |
282 | ||
42172119 YZ |
283 | if (mds == -1) /* CDIR_AUTH_PARENT */ |
284 | mds = diri_auth; | |
285 | ||
355da1eb | 286 | mutex_lock(&ci->i_fragtree_mutex); |
8d08503c | 287 | if (ndist == 0 && mds == diri_auth) { |
355da1eb SW |
288 | /* no delegation info needed. */ |
289 | frag = __ceph_find_frag(ci, id); | |
290 | if (!frag) | |
291 | goto out; | |
292 | if (frag->split_by == 0) { | |
293 | /* tree leaf, remove */ | |
294 | dout("fill_dirfrag removed %llx.%llx frag %x" | |
295 | " (no ref)\n", ceph_vinop(inode), id); | |
296 | rb_erase(&frag->node, &ci->i_fragtree); | |
297 | kfree(frag); | |
298 | } else { | |
299 | /* tree branch, keep and clear */ | |
300 | dout("fill_dirfrag cleared %llx.%llx frag %x" | |
301 | " referral\n", ceph_vinop(inode), id); | |
302 | frag->mds = -1; | |
303 | frag->ndist = 0; | |
304 | } | |
305 | goto out; | |
306 | } | |
307 | ||
308 | ||
309 | /* find/add this frag to store mds delegation info */ | |
310 | frag = __get_or_create_frag(ci, id); | |
311 | if (IS_ERR(frag)) { | |
312 | /* this is not the end of the world; we can continue | |
313 | with bad/inaccurate delegation info */ | |
314 | pr_err("fill_dirfrag ENOMEM on mds ref %llx.%llx fg %x\n", | |
315 | ceph_vinop(inode), le32_to_cpu(dirinfo->frag)); | |
316 | err = -ENOMEM; | |
317 | goto out; | |
318 | } | |
319 | ||
320 | frag->mds = mds; | |
321 | frag->ndist = min_t(u32, ndist, CEPH_MAX_DIRFRAG_REP); | |
322 | for (i = 0; i < frag->ndist; i++) | |
323 | frag->dist[i] = le32_to_cpu(dirinfo->dist[i]); | |
324 | dout("fill_dirfrag %llx.%llx frag %x ndist=%d\n", | |
325 | ceph_vinop(inode), frag->frag, frag->ndist); | |
326 | ||
327 | out: | |
328 | mutex_unlock(&ci->i_fragtree_mutex); | |
329 | return err; | |
330 | } | |
331 | ||
a407846e YZ |
332 | static int frag_tree_split_cmp(const void *l, const void *r) |
333 | { | |
334 | struct ceph_frag_tree_split *ls = (struct ceph_frag_tree_split*)l; | |
335 | struct ceph_frag_tree_split *rs = (struct ceph_frag_tree_split*)r; | |
fe2ed425 JL |
336 | return ceph_frag_compare(le32_to_cpu(ls->frag), |
337 | le32_to_cpu(rs->frag)); | |
a407846e YZ |
338 | } |
339 | ||
a4b7431f YZ |
340 | static bool is_frag_child(u32 f, struct ceph_inode_frag *frag) |
341 | { | |
342 | if (!frag) | |
343 | return f == ceph_frag_make(0, 0); | |
344 | if (ceph_frag_bits(f) != ceph_frag_bits(frag->frag) + frag->split_by) | |
345 | return false; | |
346 | return ceph_frag_contains_value(frag->frag, ceph_frag_value(f)); | |
347 | } | |
348 | ||
3e7fbe9c YZ |
349 | static int ceph_fill_fragtree(struct inode *inode, |
350 | struct ceph_frag_tree_head *fragtree, | |
351 | struct ceph_mds_reply_dirfrag *dirinfo) | |
352 | { | |
353 | struct ceph_inode_info *ci = ceph_inode(inode); | |
a4b7431f | 354 | struct ceph_inode_frag *frag, *prev_frag = NULL; |
3e7fbe9c | 355 | struct rb_node *rb_node; |
1b1bc16d YZ |
356 | unsigned i, split_by, nsplits; |
357 | u32 id; | |
3e7fbe9c YZ |
358 | bool update = false; |
359 | ||
360 | mutex_lock(&ci->i_fragtree_mutex); | |
361 | nsplits = le32_to_cpu(fragtree->nsplits); | |
1b1bc16d YZ |
362 | if (nsplits != ci->i_fragtree_nsplits) { |
363 | update = true; | |
364 | } else if (nsplits) { | |
8032bf12 | 365 | i = get_random_u32_below(nsplits); |
3e7fbe9c YZ |
366 | id = le32_to_cpu(fragtree->splits[i].frag); |
367 | if (!__ceph_find_frag(ci, id)) | |
368 | update = true; | |
369 | } else if (!RB_EMPTY_ROOT(&ci->i_fragtree)) { | |
370 | rb_node = rb_first(&ci->i_fragtree); | |
371 | frag = rb_entry(rb_node, struct ceph_inode_frag, node); | |
372 | if (frag->frag != ceph_frag_make(0, 0) || rb_next(rb_node)) | |
373 | update = true; | |
374 | } | |
375 | if (!update && dirinfo) { | |
376 | id = le32_to_cpu(dirinfo->frag); | |
377 | if (id != __ceph_choose_frag(ci, id, NULL, NULL)) | |
378 | update = true; | |
379 | } | |
380 | if (!update) | |
381 | goto out_unlock; | |
382 | ||
a407846e YZ |
383 | if (nsplits > 1) { |
384 | sort(fragtree->splits, nsplits, sizeof(fragtree->splits[0]), | |
385 | frag_tree_split_cmp, NULL); | |
386 | } | |
387 | ||
3e7fbe9c YZ |
388 | dout("fill_fragtree %llx.%llx\n", ceph_vinop(inode)); |
389 | rb_node = rb_first(&ci->i_fragtree); | |
390 | for (i = 0; i < nsplits; i++) { | |
391 | id = le32_to_cpu(fragtree->splits[i].frag); | |
1b1bc16d YZ |
392 | split_by = le32_to_cpu(fragtree->splits[i].by); |
393 | if (split_by == 0 || ceph_frag_bits(id) + split_by > 24) { | |
394 | pr_err("fill_fragtree %llx.%llx invalid split %d/%u, " | |
395 | "frag %x split by %d\n", ceph_vinop(inode), | |
396 | i, nsplits, id, split_by); | |
397 | continue; | |
398 | } | |
3e7fbe9c YZ |
399 | frag = NULL; |
400 | while (rb_node) { | |
401 | frag = rb_entry(rb_node, struct ceph_inode_frag, node); | |
402 | if (ceph_frag_compare(frag->frag, id) >= 0) { | |
403 | if (frag->frag != id) | |
404 | frag = NULL; | |
405 | else | |
406 | rb_node = rb_next(rb_node); | |
407 | break; | |
408 | } | |
409 | rb_node = rb_next(rb_node); | |
a4b7431f YZ |
410 | /* delete stale split/leaf node */ |
411 | if (frag->split_by > 0 || | |
412 | !is_frag_child(frag->frag, prev_frag)) { | |
413 | rb_erase(&frag->node, &ci->i_fragtree); | |
1b1bc16d YZ |
414 | if (frag->split_by > 0) |
415 | ci->i_fragtree_nsplits--; | |
a4b7431f YZ |
416 | kfree(frag); |
417 | } | |
3e7fbe9c YZ |
418 | frag = NULL; |
419 | } | |
420 | if (!frag) { | |
421 | frag = __get_or_create_frag(ci, id); | |
422 | if (IS_ERR(frag)) | |
423 | continue; | |
424 | } | |
1b1bc16d YZ |
425 | if (frag->split_by == 0) |
426 | ci->i_fragtree_nsplits++; | |
427 | frag->split_by = split_by; | |
3e7fbe9c | 428 | dout(" frag %x split by %d\n", frag->frag, frag->split_by); |
a4b7431f | 429 | prev_frag = frag; |
3e7fbe9c YZ |
430 | } |
431 | while (rb_node) { | |
432 | frag = rb_entry(rb_node, struct ceph_inode_frag, node); | |
433 | rb_node = rb_next(rb_node); | |
a4b7431f YZ |
434 | /* delete stale split/leaf node */ |
435 | if (frag->split_by > 0 || | |
436 | !is_frag_child(frag->frag, prev_frag)) { | |
437 | rb_erase(&frag->node, &ci->i_fragtree); | |
1b1bc16d YZ |
438 | if (frag->split_by > 0) |
439 | ci->i_fragtree_nsplits--; | |
a4b7431f YZ |
440 | kfree(frag); |
441 | } | |
3e7fbe9c YZ |
442 | } |
443 | out_unlock: | |
444 | mutex_unlock(&ci->i_fragtree_mutex); | |
445 | return 0; | |
446 | } | |
355da1eb SW |
447 | |
448 | /* | |
449 | * initialize a newly allocated inode. | |
450 | */ | |
451 | struct inode *ceph_alloc_inode(struct super_block *sb) | |
452 | { | |
453 | struct ceph_inode_info *ci; | |
454 | int i; | |
455 | ||
fd60b288 | 456 | ci = alloc_inode_sb(sb, ceph_inode_cachep, GFP_NOFS); |
355da1eb SW |
457 | if (!ci) |
458 | return NULL; | |
459 | ||
874c8ca1 | 460 | dout("alloc_inode %p\n", &ci->netfs.inode); |
355da1eb | 461 | |
bc899ee1 | 462 | /* Set parameters for the netfs library */ |
e81fb419 | 463 | netfs_inode_init(&ci->netfs, &ceph_netfs_ops); |
bc899ee1 | 464 | |
be655596 SW |
465 | spin_lock_init(&ci->i_ceph_lock); |
466 | ||
355da1eb | 467 | ci->i_version = 0; |
31c542a1 | 468 | ci->i_inline_version = 0; |
355da1eb SW |
469 | ci->i_time_warp_seq = 0; |
470 | ci->i_ceph_flags = 0; | |
fdd4e158 YZ |
471 | atomic64_set(&ci->i_ordered_count, 1); |
472 | atomic64_set(&ci->i_release_count, 1); | |
473 | atomic64_set(&ci->i_complete_seq[0], 0); | |
474 | atomic64_set(&ci->i_complete_seq[1], 0); | |
355da1eb SW |
475 | ci->i_symlink = NULL; |
476 | ||
fb18a575 LH |
477 | ci->i_max_bytes = 0; |
478 | ci->i_max_files = 0; | |
479 | ||
6c0f3af7 | 480 | memset(&ci->i_dir_layout, 0, sizeof(ci->i_dir_layout)); |
785892fe | 481 | memset(&ci->i_cached_layout, 0, sizeof(ci->i_cached_layout)); |
30c156d9 | 482 | RCU_INIT_POINTER(ci->i_layout.pool_ns, NULL); |
6c0f3af7 | 483 | |
355da1eb SW |
484 | ci->i_fragtree = RB_ROOT; |
485 | mutex_init(&ci->i_fragtree_mutex); | |
486 | ||
487 | ci->i_xattrs.blob = NULL; | |
488 | ci->i_xattrs.prealloc_blob = NULL; | |
489 | ci->i_xattrs.dirty = false; | |
490 | ci->i_xattrs.index = RB_ROOT; | |
491 | ci->i_xattrs.count = 0; | |
492 | ci->i_xattrs.names_size = 0; | |
493 | ci->i_xattrs.vals_size = 0; | |
494 | ci->i_xattrs.version = 0; | |
495 | ci->i_xattrs.index_version = 0; | |
496 | ||
497 | ci->i_caps = RB_ROOT; | |
498 | ci->i_auth_cap = NULL; | |
499 | ci->i_dirty_caps = 0; | |
500 | ci->i_flushing_caps = 0; | |
501 | INIT_LIST_HEAD(&ci->i_dirty_item); | |
502 | INIT_LIST_HEAD(&ci->i_flushing_item); | |
f66fd9f0 | 503 | ci->i_prealloc_cap_flush = NULL; |
e4500b5e | 504 | INIT_LIST_HEAD(&ci->i_cap_flush_list); |
355da1eb | 505 | init_waitqueue_head(&ci->i_cap_wq); |
355da1eb SW |
506 | ci->i_hold_caps_max = 0; |
507 | INIT_LIST_HEAD(&ci->i_cap_delay_list); | |
355da1eb SW |
508 | INIT_LIST_HEAD(&ci->i_cap_snaps); |
509 | ci->i_head_snapc = NULL; | |
510 | ci->i_snap_caps = 0; | |
511 | ||
719a2514 | 512 | ci->i_last_rd = ci->i_last_wr = jiffies - 3600 * HZ; |
774a6a11 | 513 | for (i = 0; i < CEPH_FILE_MODE_BITS; i++) |
355da1eb SW |
514 | ci->i_nr_by_mode[i] = 0; |
515 | ||
b0d7c223 | 516 | mutex_init(&ci->i_truncate_mutex); |
355da1eb SW |
517 | ci->i_truncate_seq = 0; |
518 | ci->i_truncate_size = 0; | |
519 | ci->i_truncate_pending = 0; | |
520 | ||
521 | ci->i_max_size = 0; | |
522 | ci->i_reported_size = 0; | |
523 | ci->i_wanted_max_size = 0; | |
524 | ci->i_requested_max_size = 0; | |
525 | ||
526 | ci->i_pin_ref = 0; | |
527 | ci->i_rd_ref = 0; | |
528 | ci->i_rdcache_ref = 0; | |
529 | ci->i_wr_ref = 0; | |
d3d0720d | 530 | ci->i_wb_ref = 0; |
f85122af | 531 | ci->i_fx_ref = 0; |
355da1eb SW |
532 | ci->i_wrbuffer_ref = 0; |
533 | ci->i_wrbuffer_ref_head = 0; | |
89aa5930 | 534 | atomic_set(&ci->i_filelock_ref, 0); |
1e9c2eb6 | 535 | atomic_set(&ci->i_shared_gen, 1); |
355da1eb SW |
536 | ci->i_rdcache_gen = 0; |
537 | ci->i_rdcache_revoking = 0; | |
538 | ||
355da1eb | 539 | INIT_LIST_HEAD(&ci->i_unsafe_dirops); |
68cd5b4b | 540 | INIT_LIST_HEAD(&ci->i_unsafe_iops); |
355da1eb SW |
541 | spin_lock_init(&ci->i_unsafe_lock); |
542 | ||
543 | ci->i_snap_realm = NULL; | |
544 | INIT_LIST_HEAD(&ci->i_snap_realm_item); | |
545 | INIT_LIST_HEAD(&ci->i_snap_flush_item); | |
546 | ||
1cf89a8d YZ |
547 | INIT_WORK(&ci->i_work, ceph_inode_work); |
548 | ci->i_work_mask = 0; | |
245ce991 | 549 | memset(&ci->i_btime, '\0', sizeof(ci->i_btime)); |
874c8ca1 | 550 | return &ci->netfs.inode; |
355da1eb SW |
551 | } |
552 | ||
cfa6d412 | 553 | void ceph_free_inode(struct inode *inode) |
fa0d7e3d | 554 | { |
fa0d7e3d NP |
555 | struct ceph_inode_info *ci = ceph_inode(inode); |
556 | ||
daf5cc27 | 557 | kfree(ci->i_symlink); |
fa0d7e3d NP |
558 | kmem_cache_free(ceph_inode_cachep, ci); |
559 | } | |
560 | ||
87bc5b89 | 561 | void ceph_evict_inode(struct inode *inode) |
355da1eb SW |
562 | { |
563 | struct ceph_inode_info *ci = ceph_inode(inode); | |
1dd8d470 | 564 | struct ceph_mds_client *mdsc = ceph_sb_to_mdsc(inode->i_sb); |
355da1eb SW |
565 | struct ceph_inode_frag *frag; |
566 | struct rb_node *n; | |
567 | ||
87bc5b89 YZ |
568 | dout("evict_inode %p ino %llx.%llx\n", inode, ceph_vinop(inode)); |
569 | ||
1dd8d470 XL |
570 | percpu_counter_dec(&mdsc->metric.total_inodes); |
571 | ||
87bc5b89 | 572 | truncate_inode_pages_final(&inode->i_data); |
400e1286 JL |
573 | if (inode->i_state & I_PINNING_FSCACHE_WB) |
574 | ceph_fscache_unuse_cookie(inode, true); | |
87bc5b89 | 575 | clear_inode(inode); |
355da1eb | 576 | |
99ccbd22 MT |
577 | ceph_fscache_unregister_inode_cookie(ci); |
578 | ||
d6e47819 | 579 | __ceph_remove_caps(ci); |
355da1eb | 580 | |
55ab5520 | 581 | if (__ceph_has_quota(ci, QUOTA_GET_ANY)) |
d557c48d LH |
582 | ceph_adjust_quota_realms_count(inode, false); |
583 | ||
8b218b8a SW |
584 | /* |
585 | * we may still have a snap_realm reference if there are stray | |
d9df2783 | 586 | * caps in i_snap_caps. |
8b218b8a SW |
587 | */ |
588 | if (ci->i_snap_realm) { | |
75c9627e | 589 | if (ceph_snap(inode) == CEPH_NOSNAP) { |
75c9627e | 590 | dout(" dropping residual ref to snap realm %p\n", |
0ba92e1c JL |
591 | ci->i_snap_realm); |
592 | ceph_change_snap_realm(inode, NULL); | |
75c9627e YZ |
593 | } else { |
594 | ceph_put_snapid_map(mdsc, ci->i_snapid_map); | |
595 | ci->i_snap_realm = NULL; | |
596 | } | |
8b218b8a SW |
597 | } |
598 | ||
355da1eb SW |
599 | while ((n = rb_first(&ci->i_fragtree)) != NULL) { |
600 | frag = rb_entry(n, struct ceph_inode_frag, node); | |
601 | rb_erase(n, &ci->i_fragtree); | |
602 | kfree(frag); | |
603 | } | |
1b1bc16d | 604 | ci->i_fragtree_nsplits = 0; |
355da1eb SW |
605 | |
606 | __ceph_destroy_xattrs(ci); | |
b6c1d5b8 SW |
607 | if (ci->i_xattrs.blob) |
608 | ceph_buffer_put(ci->i_xattrs.blob); | |
609 | if (ci->i_xattrs.prealloc_blob) | |
610 | ceph_buffer_put(ci->i_xattrs.prealloc_blob); | |
355da1eb | 611 | |
779fe0fb | 612 | ceph_put_string(rcu_dereference_raw(ci->i_layout.pool_ns)); |
785892fe | 613 | ceph_put_string(rcu_dereference_raw(ci->i_cached_layout.pool_ns)); |
355da1eb SW |
614 | } |
615 | ||
224a7542 YZ |
616 | static inline blkcnt_t calc_inode_blocks(u64 size) |
617 | { | |
618 | return (size + (1<<9) - 1) >> 9; | |
619 | } | |
620 | ||
355da1eb SW |
621 | /* |
622 | * Helpers to fill in size, ctime, mtime, and atime. We have to be | |
623 | * careful because either the client or MDS may have more up to date | |
624 | * info, depending on which capabilities are held, and whether | |
625 | * time_warp_seq or truncate_seq have increased. (Ordinarily, mtime | |
626 | * and size are monotonically increasing, except when utimes() or | |
627 | * truncate() increments the corresponding _seq values.) | |
628 | */ | |
629 | int ceph_fill_file_size(struct inode *inode, int issued, | |
630 | u32 truncate_seq, u64 truncate_size, u64 size) | |
631 | { | |
632 | struct ceph_inode_info *ci = ceph_inode(inode); | |
633 | int queue_trunc = 0; | |
2d6795fb | 634 | loff_t isize = i_size_read(inode); |
355da1eb SW |
635 | |
636 | if (ceph_seq_cmp(truncate_seq, ci->i_truncate_seq) > 0 || | |
2d6795fb JL |
637 | (truncate_seq == ci->i_truncate_seq && size > isize)) { |
638 | dout("size %lld -> %llu\n", isize, size); | |
a3d714c3 YZ |
639 | if (size > 0 && S_ISDIR(inode->i_mode)) { |
640 | pr_err("fill_file_size non-zero size for directory\n"); | |
641 | size = 0; | |
642 | } | |
99c88e69 | 643 | i_size_write(inode, size); |
224a7542 | 644 | inode->i_blocks = calc_inode_blocks(size); |
400e1286 JL |
645 | /* |
646 | * If we're expanding, then we should be able to just update | |
647 | * the existing cookie. | |
648 | */ | |
649 | if (size > isize) | |
650 | ceph_fscache_update(inode); | |
355da1eb SW |
651 | ci->i_reported_size = size; |
652 | if (truncate_seq != ci->i_truncate_seq) { | |
653 | dout("truncate_seq %u -> %u\n", | |
654 | ci->i_truncate_seq, truncate_seq); | |
655 | ci->i_truncate_seq = truncate_seq; | |
b0d7c223 YZ |
656 | |
657 | /* the MDS should have revoked these caps */ | |
658 | WARN_ON_ONCE(issued & (CEPH_CAP_FILE_EXCL | | |
659 | CEPH_CAP_FILE_RD | | |
660 | CEPH_CAP_FILE_WR | | |
661 | CEPH_CAP_FILE_LAZYIO)); | |
3d497d85 YS |
662 | /* |
663 | * If we hold relevant caps, or in the case where we're | |
664 | * not the only client referencing this file and we | |
665 | * don't hold those caps, then we need to check whether | |
666 | * the file is either opened or mmaped | |
667 | */ | |
b0d7c223 YZ |
668 | if ((issued & (CEPH_CAP_FILE_CACHE| |
669 | CEPH_CAP_FILE_BUFFER)) || | |
3d497d85 | 670 | mapping_mapped(inode->i_mapping) || |
719a2514 | 671 | __ceph_is_file_opened(ci)) { |
355da1eb SW |
672 | ci->i_truncate_pending++; |
673 | queue_trunc = 1; | |
674 | } | |
675 | } | |
676 | } | |
677 | if (ceph_seq_cmp(truncate_seq, ci->i_truncate_seq) >= 0 && | |
678 | ci->i_truncate_size != truncate_size) { | |
679 | dout("truncate_size %lld -> %llu\n", ci->i_truncate_size, | |
680 | truncate_size); | |
681 | ci->i_truncate_size = truncate_size; | |
682 | } | |
683 | return queue_trunc; | |
684 | } | |
685 | ||
686 | void ceph_fill_file_time(struct inode *inode, int issued, | |
9bbeab41 AB |
687 | u64 time_warp_seq, struct timespec64 *ctime, |
688 | struct timespec64 *mtime, struct timespec64 *atime) | |
355da1eb SW |
689 | { |
690 | struct ceph_inode_info *ci = ceph_inode(inode); | |
691 | int warn = 0; | |
692 | ||
693 | if (issued & (CEPH_CAP_FILE_EXCL| | |
694 | CEPH_CAP_FILE_WR| | |
d8672d64 SW |
695 | CEPH_CAP_FILE_BUFFER| |
696 | CEPH_CAP_AUTH_EXCL| | |
697 | CEPH_CAP_XATTR_EXCL)) { | |
ffdeec7a | 698 | if (ci->i_version == 0 || |
9bbeab41 | 699 | timespec64_compare(ctime, &inode->i_ctime) > 0) { |
13442b03 | 700 | dout("ctime %lld.%09ld -> %lld.%09ld inc w/ cap\n", |
9bbeab41 AB |
701 | inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec, |
702 | ctime->tv_sec, ctime->tv_nsec); | |
703 | inode->i_ctime = *ctime; | |
355da1eb | 704 | } |
ffdeec7a YZ |
705 | if (ci->i_version == 0 || |
706 | ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) > 0) { | |
355da1eb | 707 | /* the MDS did a utimes() */ |
13442b03 | 708 | dout("mtime %lld.%09ld -> %lld.%09ld " |
355da1eb | 709 | "tw %d -> %d\n", |
9bbeab41 AB |
710 | inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec, |
711 | mtime->tv_sec, mtime->tv_nsec, | |
355da1eb SW |
712 | ci->i_time_warp_seq, (int)time_warp_seq); |
713 | ||
9bbeab41 AB |
714 | inode->i_mtime = *mtime; |
715 | inode->i_atime = *atime; | |
355da1eb SW |
716 | ci->i_time_warp_seq = time_warp_seq; |
717 | } else if (time_warp_seq == ci->i_time_warp_seq) { | |
718 | /* nobody did utimes(); take the max */ | |
9bbeab41 | 719 | if (timespec64_compare(mtime, &inode->i_mtime) > 0) { |
13442b03 | 720 | dout("mtime %lld.%09ld -> %lld.%09ld inc\n", |
9bbeab41 | 721 | inode->i_mtime.tv_sec, |
355da1eb | 722 | inode->i_mtime.tv_nsec, |
9bbeab41 AB |
723 | mtime->tv_sec, mtime->tv_nsec); |
724 | inode->i_mtime = *mtime; | |
355da1eb | 725 | } |
9bbeab41 | 726 | if (timespec64_compare(atime, &inode->i_atime) > 0) { |
13442b03 | 727 | dout("atime %lld.%09ld -> %lld.%09ld inc\n", |
9bbeab41 | 728 | inode->i_atime.tv_sec, |
355da1eb | 729 | inode->i_atime.tv_nsec, |
9bbeab41 AB |
730 | atime->tv_sec, atime->tv_nsec); |
731 | inode->i_atime = *atime; | |
355da1eb SW |
732 | } |
733 | } else if (issued & CEPH_CAP_FILE_EXCL) { | |
734 | /* we did a utimes(); ignore mds values */ | |
735 | } else { | |
736 | warn = 1; | |
737 | } | |
738 | } else { | |
d8672d64 | 739 | /* we have no write|excl caps; whatever the MDS says is true */ |
355da1eb | 740 | if (ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) >= 0) { |
9bbeab41 AB |
741 | inode->i_ctime = *ctime; |
742 | inode->i_mtime = *mtime; | |
743 | inode->i_atime = *atime; | |
355da1eb SW |
744 | ci->i_time_warp_seq = time_warp_seq; |
745 | } else { | |
746 | warn = 1; | |
747 | } | |
748 | } | |
749 | if (warn) /* time_warp_seq shouldn't go backwards */ | |
750 | dout("%p mds time_warp_seq %llu < %u\n", | |
751 | inode, time_warp_seq, ci->i_time_warp_seq); | |
752 | } | |
753 | ||
754 | /* | |
755 | * Populate an inode based on info from mds. May be called on new or | |
756 | * existing inodes. | |
757 | */ | |
966c7160 JL |
758 | int ceph_fill_inode(struct inode *inode, struct page *locked_page, |
759 | struct ceph_mds_reply_info_in *iinfo, | |
760 | struct ceph_mds_reply_dirfrag *dirinfo, | |
761 | struct ceph_mds_session *session, int cap_fmode, | |
762 | struct ceph_cap_reservation *caps_reservation) | |
355da1eb | 763 | { |
2678da88 | 764 | struct ceph_mds_client *mdsc = ceph_sb_to_mdsc(inode->i_sb); |
355da1eb SW |
765 | struct ceph_mds_reply_inode *info = iinfo->in; |
766 | struct ceph_inode_info *ci = ceph_inode(inode); | |
2af54a72 | 767 | int issued, new_issued, info_caps; |
9bbeab41 | 768 | struct timespec64 mtime, atime, ctime; |
355da1eb | 769 | struct ceph_buffer *xattr_blob = NULL; |
af8a85a4 | 770 | struct ceph_buffer *old_blob = NULL; |
779fe0fb | 771 | struct ceph_string *pool_ns = NULL; |
d9df2783 | 772 | struct ceph_cap *new_cap = NULL; |
355da1eb | 773 | int err = 0; |
d9df2783 | 774 | bool wake = false; |
f98a128a YZ |
775 | bool queue_trunc = false; |
776 | bool new_version = false; | |
31c542a1 | 777 | bool fill_inline = false; |
ed94f87c JL |
778 | umode_t mode = le32_to_cpu(info->mode); |
779 | dev_t rdev = le32_to_cpu(info->rdev); | |
355da1eb | 780 | |
27171ae6 JL |
781 | lockdep_assert_held(&mdsc->snap_rwsem); |
782 | ||
966c7160 | 783 | dout("%s %p ino %llx.%llx v %llu had %llu\n", __func__, |
355da1eb SW |
784 | inode, ceph_vinop(inode), le64_to_cpu(info->version), |
785 | ci->i_version); | |
786 | ||
ed94f87c JL |
787 | /* Once I_NEW is cleared, we can't change type or dev numbers */ |
788 | if (inode->i_state & I_NEW) { | |
789 | inode->i_mode = mode; | |
790 | } else { | |
791 | if (inode_wrong_type(inode, mode)) { | |
792 | pr_warn_once("inode type changed! (ino %llx.%llx is 0%o, mds says 0%o)\n", | |
793 | ceph_vinop(inode), inode->i_mode, mode); | |
794 | return -ESTALE; | |
795 | } | |
796 | ||
797 | if ((S_ISCHR(mode) || S_ISBLK(mode)) && inode->i_rdev != rdev) { | |
798 | pr_warn_once("dev inode rdev changed! (ino %llx.%llx is %u:%u, mds says %u:%u)\n", | |
799 | ceph_vinop(inode), MAJOR(inode->i_rdev), | |
800 | MINOR(inode->i_rdev), MAJOR(rdev), | |
801 | MINOR(rdev)); | |
802 | return -ESTALE; | |
803 | } | |
804 | } | |
805 | ||
2af54a72 YZ |
806 | info_caps = le32_to_cpu(info->cap.caps); |
807 | ||
d9df2783 | 808 | /* prealloc new cap struct */ |
9a6bed4f | 809 | if (info_caps && ceph_snap(inode) == CEPH_NOSNAP) { |
d9df2783 | 810 | new_cap = ceph_get_cap(mdsc, caps_reservation); |
9a6bed4f JL |
811 | if (!new_cap) |
812 | return -ENOMEM; | |
813 | } | |
d9df2783 | 814 | |
355da1eb SW |
815 | /* |
816 | * prealloc xattr data, if it looks like we'll need it. only | |
817 | * if len > 4 (meaning there are actually xattrs; the first 4 | |
818 | * bytes are the xattr count). | |
819 | */ | |
820 | if (iinfo->xattr_len > 4) { | |
b6c1d5b8 | 821 | xattr_blob = ceph_buffer_new(iinfo->xattr_len, GFP_NOFS); |
355da1eb | 822 | if (!xattr_blob) |
966c7160 | 823 | pr_err("%s ENOMEM xattr blob %d bytes\n", __func__, |
355da1eb SW |
824 | iinfo->xattr_len); |
825 | } | |
826 | ||
779fe0fb YZ |
827 | if (iinfo->pool_ns_len > 0) |
828 | pool_ns = ceph_find_or_create_string(iinfo->pool_ns_data, | |
829 | iinfo->pool_ns_len); | |
830 | ||
75c9627e YZ |
831 | if (ceph_snap(inode) != CEPH_NOSNAP && !ci->i_snapid_map) |
832 | ci->i_snapid_map = ceph_get_snapid_map(mdsc, ceph_snap(inode)); | |
833 | ||
be655596 | 834 | spin_lock(&ci->i_ceph_lock); |
355da1eb SW |
835 | |
836 | /* | |
837 | * provided version will be odd if inode value is projected, | |
8bd59e01 SW |
838 | * even if stable. skip the update if we have newer stable |
839 | * info (ours>=theirs, e.g. due to racing mds replies), unless | |
840 | * we are getting projected (unstable) info (in which case the | |
841 | * version is odd, and we want ours>theirs). | |
842 | * us them | |
843 | * 2 2 skip | |
844 | * 3 2 skip | |
845 | * 3 3 update | |
355da1eb | 846 | */ |
f98a128a YZ |
847 | if (ci->i_version == 0 || |
848 | ((info->cap.flags & CEPH_CAP_FLAG_AUTH) && | |
849 | le64_to_cpu(info->version) > (ci->i_version & ~1))) | |
850 | new_version = true; | |
851 | ||
a35ead31 JL |
852 | /* Update change_attribute */ |
853 | inode_set_max_iversion_raw(inode, iinfo->change_attr); | |
854 | ||
2af54a72 YZ |
855 | __ceph_caps_issued(ci, &issued); |
856 | issued |= __ceph_caps_dirty(ci); | |
857 | new_issued = ~issued & info_caps; | |
355da1eb | 858 | |
75067034 LH |
859 | /* directories have fl_stripe_unit set to zero */ |
860 | if (le32_to_cpu(info->layout.fl_stripe_unit)) | |
861 | inode->i_blkbits = | |
862 | fls(le32_to_cpu(info->layout.fl_stripe_unit)) - 1; | |
863 | else | |
864 | inode->i_blkbits = CEPH_BLOCK_SHIFT; | |
355da1eb | 865 | |
d557c48d | 866 | __ceph_update_quota(ci, iinfo->max_bytes, iinfo->max_files); |
fb18a575 | 867 | |
f98a128a YZ |
868 | if ((new_version || (new_issued & CEPH_CAP_AUTH_SHARED)) && |
869 | (issued & CEPH_CAP_AUTH_EXCL) == 0) { | |
ed94f87c | 870 | inode->i_mode = mode; |
ab871b90 EB |
871 | inode->i_uid = make_kuid(&init_user_ns, le32_to_cpu(info->uid)); |
872 | inode->i_gid = make_kgid(&init_user_ns, le32_to_cpu(info->gid)); | |
355da1eb | 873 | dout("%p mode 0%o uid.gid %d.%d\n", inode, inode->i_mode, |
bd2bae6a EB |
874 | from_kuid(&init_user_ns, inode->i_uid), |
875 | from_kgid(&init_user_ns, inode->i_gid)); | |
245ce991 | 876 | ceph_decode_timespec64(&ci->i_btime, &iinfo->btime); |
193e7b37 | 877 | ceph_decode_timespec64(&ci->i_snap_btime, &iinfo->snap_btime); |
355da1eb SW |
878 | } |
879 | ||
f98a128a YZ |
880 | if ((new_version || (new_issued & CEPH_CAP_LINK_SHARED)) && |
881 | (issued & CEPH_CAP_LINK_EXCL) == 0) | |
bfe86848 | 882 | set_nlink(inode, le32_to_cpu(info->nlink)); |
355da1eb | 883 | |
f98a128a YZ |
884 | if (new_version || (new_issued & CEPH_CAP_ANY_RD)) { |
885 | /* be careful with mtime, atime, size */ | |
9bbeab41 AB |
886 | ceph_decode_timespec64(&atime, &info->atime); |
887 | ceph_decode_timespec64(&mtime, &info->mtime); | |
888 | ceph_decode_timespec64(&ctime, &info->ctime); | |
f98a128a YZ |
889 | ceph_fill_file_time(inode, issued, |
890 | le32_to_cpu(info->time_warp_seq), | |
891 | &ctime, &mtime, &atime); | |
892 | } | |
893 | ||
2af54a72 YZ |
894 | if (new_version || (info_caps & CEPH_CAP_FILE_SHARED)) { |
895 | ci->i_files = le64_to_cpu(info->files); | |
896 | ci->i_subdirs = le64_to_cpu(info->subdirs); | |
897 | } | |
898 | ||
f98a128a YZ |
899 | if (new_version || |
900 | (new_issued & (CEPH_CAP_ANY_FILE_RD | CEPH_CAP_ANY_FILE_WR))) { | |
7627151e | 901 | s64 old_pool = ci->i_layout.pool_id; |
779fe0fb YZ |
902 | struct ceph_string *old_ns; |
903 | ||
7627151e | 904 | ceph_file_layout_from_legacy(&ci->i_layout, &info->layout); |
779fe0fb YZ |
905 | old_ns = rcu_dereference_protected(ci->i_layout.pool_ns, |
906 | lockdep_is_held(&ci->i_ceph_lock)); | |
907 | rcu_assign_pointer(ci->i_layout.pool_ns, pool_ns); | |
908 | ||
909 | if (ci->i_layout.pool_id != old_pool || pool_ns != old_ns) | |
10183a69 | 910 | ci->i_ceph_flags &= ~CEPH_I_POOL_PERM; |
10183a69 | 911 | |
779fe0fb | 912 | pool_ns = old_ns; |
10183a69 | 913 | |
f98a128a YZ |
914 | queue_trunc = ceph_fill_file_size(inode, issued, |
915 | le32_to_cpu(info->truncate_seq), | |
916 | le64_to_cpu(info->truncate_size), | |
917 | le64_to_cpu(info->size)); | |
918 | /* only update max_size on auth cap */ | |
919 | if ((info->cap.flags & CEPH_CAP_FLAG_AUTH) && | |
920 | ci->i_max_size != le64_to_cpu(info->max_size)) { | |
921 | dout("max_size %lld -> %llu\n", ci->i_max_size, | |
922 | le64_to_cpu(info->max_size)); | |
923 | ci->i_max_size = le64_to_cpu(info->max_size); | |
924 | } | |
925 | } | |
355da1eb | 926 | |
49a9f4f6 YZ |
927 | /* layout and rstat are not tracked by capability, update them if |
928 | * the inode info is from auth mds */ | |
929 | if (new_version || (info->cap.flags & CEPH_CAP_FLAG_AUTH)) { | |
930 | if (S_ISDIR(inode->i_mode)) { | |
931 | ci->i_dir_layout = iinfo->dir_layout; | |
932 | ci->i_rbytes = le64_to_cpu(info->rbytes); | |
933 | ci->i_rfiles = le64_to_cpu(info->rfiles); | |
934 | ci->i_rsubdirs = le64_to_cpu(info->rsubdirs); | |
08796873 | 935 | ci->i_dir_pin = iinfo->dir_pin; |
e7f72952 | 936 | ci->i_rsnaps = iinfo->rsnaps; |
9bbeab41 | 937 | ceph_decode_timespec64(&ci->i_rctime, &info->rctime); |
49a9f4f6 YZ |
938 | } |
939 | } | |
940 | ||
355da1eb SW |
941 | /* xattrs */ |
942 | /* note that if i_xattrs.len <= 4, i_xattrs.data will still be NULL. */ | |
508b32d8 | 943 | if ((ci->i_xattrs.version == 0 || !(issued & CEPH_CAP_XATTR_EXCL)) && |
355da1eb SW |
944 | le64_to_cpu(info->xattr_version) > ci->i_xattrs.version) { |
945 | if (ci->i_xattrs.blob) | |
af8a85a4 | 946 | old_blob = ci->i_xattrs.blob; |
355da1eb SW |
947 | ci->i_xattrs.blob = xattr_blob; |
948 | if (xattr_blob) | |
949 | memcpy(ci->i_xattrs.blob->vec.iov_base, | |
950 | iinfo->xattr_data, iinfo->xattr_len); | |
951 | ci->i_xattrs.version = le64_to_cpu(info->xattr_version); | |
7221fe4c | 952 | ceph_forget_all_cached_acls(inode); |
ac6713cc | 953 | ceph_security_invalidate_secctx(inode); |
a6424e48 | 954 | xattr_blob = NULL; |
355da1eb SW |
955 | } |
956 | ||
ffdeec7a | 957 | /* finally update i_version */ |
aae1a442 YZ |
958 | if (le64_to_cpu(info->version) > ci->i_version) |
959 | ci->i_version = le64_to_cpu(info->version); | |
ffdeec7a | 960 | |
355da1eb | 961 | inode->i_mapping->a_ops = &ceph_aops; |
355da1eb SW |
962 | |
963 | switch (inode->i_mode & S_IFMT) { | |
964 | case S_IFIFO: | |
965 | case S_IFBLK: | |
966 | case S_IFCHR: | |
967 | case S_IFSOCK: | |
5ba72e60 | 968 | inode->i_blkbits = PAGE_SHIFT; |
ed94f87c | 969 | init_special_inode(inode, inode->i_mode, rdev); |
355da1eb SW |
970 | inode->i_op = &ceph_file_iops; |
971 | break; | |
972 | case S_IFREG: | |
973 | inode->i_op = &ceph_file_iops; | |
974 | inode->i_fop = &ceph_file_fops; | |
975 | break; | |
976 | case S_IFLNK: | |
977 | inode->i_op = &ceph_symlink_iops; | |
978 | if (!ci->i_symlink) { | |
810339ec | 979 | u32 symlen = iinfo->symlink_len; |
355da1eb SW |
980 | char *sym; |
981 | ||
be655596 | 982 | spin_unlock(&ci->i_ceph_lock); |
355da1eb | 983 | |
224a7542 | 984 | if (symlen != i_size_read(inode)) { |
966c7160 JL |
985 | pr_err("%s %llx.%llx BAD symlink " |
986 | "size %lld\n", __func__, | |
987 | ceph_vinop(inode), | |
224a7542 YZ |
988 | i_size_read(inode)); |
989 | i_size_write(inode, symlen); | |
990 | inode->i_blocks = calc_inode_blocks(symlen); | |
991 | } | |
810339ec | 992 | |
355da1eb | 993 | err = -ENOMEM; |
810339ec | 994 | sym = kstrndup(iinfo->symlink, symlen, GFP_NOFS); |
355da1eb SW |
995 | if (!sym) |
996 | goto out; | |
355da1eb | 997 | |
be655596 | 998 | spin_lock(&ci->i_ceph_lock); |
355da1eb SW |
999 | if (!ci->i_symlink) |
1000 | ci->i_symlink = sym; | |
1001 | else | |
1002 | kfree(sym); /* lost a race */ | |
1003 | } | |
ac194dcc | 1004 | inode->i_link = ci->i_symlink; |
355da1eb SW |
1005 | break; |
1006 | case S_IFDIR: | |
1007 | inode->i_op = &ceph_dir_iops; | |
1008 | inode->i_fop = &ceph_dir_fops; | |
355da1eb SW |
1009 | break; |
1010 | default: | |
966c7160 | 1011 | pr_err("%s %llx.%llx BAD mode 0%o\n", __func__, |
355da1eb SW |
1012 | ceph_vinop(inode), inode->i_mode); |
1013 | } | |
1014 | ||
355da1eb | 1015 | /* were we issued a capability? */ |
2af54a72 | 1016 | if (info_caps) { |
355da1eb SW |
1017 | if (ceph_snap(inode) == CEPH_NOSNAP) { |
1018 | ceph_add_cap(inode, session, | |
1019 | le64_to_cpu(info->cap.cap_id), | |
135e671e | 1020 | info_caps, |
355da1eb SW |
1021 | le32_to_cpu(info->cap.wanted), |
1022 | le32_to_cpu(info->cap.seq), | |
1023 | le32_to_cpu(info->cap.mseq), | |
1024 | le64_to_cpu(info->cap.realm), | |
d9df2783 | 1025 | info->cap.flags, &new_cap); |
2f92b3d0 YZ |
1026 | |
1027 | /* set dir completion flag? */ | |
1028 | if (S_ISDIR(inode->i_mode) && | |
1029 | ci->i_files == 0 && ci->i_subdirs == 0 && | |
2af54a72 | 1030 | (info_caps & CEPH_CAP_FILE_SHARED) && |
2f92b3d0 YZ |
1031 | (issued & CEPH_CAP_FILE_EXCL) == 0 && |
1032 | !__ceph_dir_is_complete(ci)) { | |
1033 | dout(" marking %p complete (empty)\n", inode); | |
fdd4e158 | 1034 | i_size_write(inode, 0); |
2f92b3d0 | 1035 | __ceph_dir_set_complete(ci, |
fdd4e158 YZ |
1036 | atomic64_read(&ci->i_release_count), |
1037 | atomic64_read(&ci->i_ordered_count)); | |
2f92b3d0 YZ |
1038 | } |
1039 | ||
d9df2783 | 1040 | wake = true; |
355da1eb | 1041 | } else { |
355da1eb | 1042 | dout(" %p got snap_caps %s\n", inode, |
2af54a72 YZ |
1043 | ceph_cap_string(info_caps)); |
1044 | ci->i_snap_caps |= info_caps; | |
355da1eb SW |
1045 | } |
1046 | } | |
31c542a1 YZ |
1047 | |
1048 | if (iinfo->inline_version > 0 && | |
1049 | iinfo->inline_version >= ci->i_inline_version) { | |
1050 | int cache_caps = CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_LAZYIO; | |
1051 | ci->i_inline_version = iinfo->inline_version; | |
48490776 | 1052 | if (ceph_has_inline_data(ci) && |
2af54a72 | 1053 | (locked_page || (info_caps & cache_caps))) |
31c542a1 YZ |
1054 | fill_inline = true; |
1055 | } | |
1056 | ||
719a2514 YZ |
1057 | if (cap_fmode >= 0) { |
1058 | if (!info_caps) | |
1059 | pr_warn("mds issued no caps on %llx.%llx\n", | |
1060 | ceph_vinop(inode)); | |
1061 | __ceph_touch_fmode(ci, mdsc, cap_fmode); | |
1062 | } | |
1063 | ||
be655596 | 1064 | spin_unlock(&ci->i_ceph_lock); |
355da1eb | 1065 | |
400e1286 JL |
1066 | ceph_fscache_register_inode_cookie(inode); |
1067 | ||
31c542a1 | 1068 | if (fill_inline) |
01deead0 | 1069 | ceph_fill_inline_data(inode, locked_page, |
31c542a1 YZ |
1070 | iinfo->inline_data, iinfo->inline_len); |
1071 | ||
d9df2783 YZ |
1072 | if (wake) |
1073 | wake_up_all(&ci->i_cap_wq); | |
1074 | ||
355da1eb SW |
1075 | /* queue truncate if we saw i_size decrease */ |
1076 | if (queue_trunc) | |
3c6f6b79 | 1077 | ceph_queue_vmtruncate(inode); |
355da1eb SW |
1078 | |
1079 | /* populate frag tree */ | |
3e7fbe9c YZ |
1080 | if (S_ISDIR(inode->i_mode)) |
1081 | ceph_fill_fragtree(inode, &info->fragtree, dirinfo); | |
355da1eb SW |
1082 | |
1083 | /* update delegation info? */ | |
1084 | if (dirinfo) | |
1085 | ceph_fill_dirfrag(inode, dirinfo); | |
1086 | ||
1087 | err = 0; | |
355da1eb | 1088 | out: |
d9df2783 YZ |
1089 | if (new_cap) |
1090 | ceph_put_cap(mdsc, new_cap); | |
af8a85a4 LH |
1091 | ceph_buffer_put(old_blob); |
1092 | ceph_buffer_put(xattr_blob); | |
779fe0fb | 1093 | ceph_put_string(pool_ns); |
355da1eb SW |
1094 | return err; |
1095 | } | |
1096 | ||
1097 | /* | |
543212b3 | 1098 | * caller should hold session s_mutex and dentry->d_lock. |
355da1eb | 1099 | */ |
543212b3 YZ |
1100 | static void __update_dentry_lease(struct inode *dir, struct dentry *dentry, |
1101 | struct ceph_mds_reply_lease *lease, | |
1102 | struct ceph_mds_session *session, | |
1103 | unsigned long from_time, | |
1104 | struct ceph_mds_session **old_lease_session) | |
355da1eb SW |
1105 | { |
1106 | struct ceph_dentry_info *di = ceph_dentry(dentry); | |
f5e17aed | 1107 | unsigned mask = le16_to_cpu(lease->mask); |
355da1eb SW |
1108 | long unsigned duration = le32_to_cpu(lease->duration_ms); |
1109 | long unsigned ttl = from_time + (duration * HZ) / 1000; | |
1110 | long unsigned half_ttl = from_time + (duration * HZ / 2) / 1000; | |
f5d55f03 | 1111 | |
2f90b852 SW |
1112 | dout("update_dentry_lease %p duration %lu ms ttl %lu\n", |
1113 | dentry, duration, ttl); | |
355da1eb | 1114 | |
18fc8abd AV |
1115 | /* only track leases on regular dentries */ |
1116 | if (ceph_snap(dir) != CEPH_NOSNAP) | |
543212b3 | 1117 | return; |
18fc8abd | 1118 | |
f5e17aed JL |
1119 | if (mask & CEPH_LEASE_PRIMARY_LINK) |
1120 | di->flags |= CEPH_DENTRY_PRIMARY_LINK; | |
1121 | else | |
1122 | di->flags &= ~CEPH_DENTRY_PRIMARY_LINK; | |
1123 | ||
97aeb6bf | 1124 | di->lease_shared_gen = atomic_read(&ceph_inode(dir)->i_shared_gen); |
f5e17aed | 1125 | if (!(mask & CEPH_LEASE_VALID)) { |
37c4efc1 | 1126 | __ceph_dentry_dir_lease_touch(di); |
543212b3 | 1127 | return; |
37c4efc1 | 1128 | } |
355da1eb | 1129 | |
52d60f8e | 1130 | if (di->lease_gen == atomic_read(&session->s_cap_gen) && |
9b16f03c | 1131 | time_before(ttl, di->time)) |
543212b3 | 1132 | return; /* we already have a newer lease. */ |
355da1eb | 1133 | |
481f001f | 1134 | if (di->lease_session && di->lease_session != session) { |
543212b3 | 1135 | *old_lease_session = di->lease_session; |
481f001f YZ |
1136 | di->lease_session = NULL; |
1137 | } | |
355da1eb | 1138 | |
355da1eb SW |
1139 | if (!di->lease_session) |
1140 | di->lease_session = ceph_get_mds_session(session); | |
52d60f8e | 1141 | di->lease_gen = atomic_read(&session->s_cap_gen); |
355da1eb SW |
1142 | di->lease_seq = le32_to_cpu(lease->seq); |
1143 | di->lease_renew_after = half_ttl; | |
1144 | di->lease_renew_from = 0; | |
9b16f03c | 1145 | di->time = ttl; |
37c4efc1 YZ |
1146 | |
1147 | __ceph_dentry_lease_touch(di); | |
543212b3 YZ |
1148 | } |
1149 | ||
1150 | static inline void update_dentry_lease(struct inode *dir, struct dentry *dentry, | |
1151 | struct ceph_mds_reply_lease *lease, | |
1152 | struct ceph_mds_session *session, | |
1153 | unsigned long from_time) | |
1154 | { | |
1155 | struct ceph_mds_session *old_lease_session = NULL; | |
1156 | spin_lock(&dentry->d_lock); | |
1157 | __update_dentry_lease(dir, dentry, lease, session, from_time, | |
1158 | &old_lease_session); | |
1159 | spin_unlock(&dentry->d_lock); | |
7e65624d | 1160 | ceph_put_mds_session(old_lease_session); |
543212b3 YZ |
1161 | } |
1162 | ||
1163 | /* | |
1164 | * update dentry lease without having parent inode locked | |
1165 | */ | |
1166 | static void update_dentry_lease_careful(struct dentry *dentry, | |
1167 | struct ceph_mds_reply_lease *lease, | |
1168 | struct ceph_mds_session *session, | |
1169 | unsigned long from_time, | |
1170 | char *dname, u32 dname_len, | |
1171 | struct ceph_vino *pdvino, | |
1172 | struct ceph_vino *ptvino) | |
1173 | ||
1174 | { | |
1175 | struct inode *dir; | |
1176 | struct ceph_mds_session *old_lease_session = NULL; | |
1177 | ||
1178 | spin_lock(&dentry->d_lock); | |
1179 | /* make sure dentry's name matches target */ | |
1180 | if (dentry->d_name.len != dname_len || | |
1181 | memcmp(dentry->d_name.name, dname, dname_len)) | |
1182 | goto out_unlock; | |
1183 | ||
1184 | dir = d_inode(dentry->d_parent); | |
1185 | /* make sure parent matches dvino */ | |
1186 | if (!ceph_ino_compare(dir, pdvino)) | |
1187 | goto out_unlock; | |
1188 | ||
1189 | /* make sure dentry's inode matches target. NULL ptvino means that | |
1190 | * we expect a negative dentry */ | |
1191 | if (ptvino) { | |
1192 | if (d_really_is_negative(dentry)) | |
1193 | goto out_unlock; | |
1194 | if (!ceph_ino_compare(d_inode(dentry), ptvino)) | |
1195 | goto out_unlock; | |
1196 | } else { | |
1197 | if (d_really_is_positive(dentry)) | |
1198 | goto out_unlock; | |
1199 | } | |
1200 | ||
1201 | __update_dentry_lease(dir, dentry, lease, session, | |
1202 | from_time, &old_lease_session); | |
355da1eb SW |
1203 | out_unlock: |
1204 | spin_unlock(&dentry->d_lock); | |
7e65624d | 1205 | ceph_put_mds_session(old_lease_session); |
355da1eb SW |
1206 | } |
1207 | ||
1208 | /* | |
1209 | * splice a dentry to an inode. | |
810313c5 | 1210 | * caller must hold directory i_rwsem for this to be safe. |
355da1eb | 1211 | */ |
2bf996ac | 1212 | static int splice_dentry(struct dentry **pdn, struct inode *in) |
355da1eb | 1213 | { |
2bf996ac | 1214 | struct dentry *dn = *pdn; |
355da1eb SW |
1215 | struct dentry *realdn; |
1216 | ||
2b0143b5 | 1217 | BUG_ON(d_inode(dn)); |
1cd3935b | 1218 | |
5495c2d0 YZ |
1219 | if (S_ISDIR(in->i_mode)) { |
1220 | /* If inode is directory, d_splice_alias() below will remove | |
1221 | * 'realdn' from its origin parent. We need to ensure that | |
1222 | * origin parent's readdir cache will not reference 'realdn' | |
1223 | */ | |
1224 | realdn = d_find_any_alias(in); | |
1225 | if (realdn) { | |
1226 | struct ceph_dentry_info *di = ceph_dentry(realdn); | |
1227 | spin_lock(&realdn->d_lock); | |
1228 | ||
1229 | realdn->d_op->d_prune(realdn); | |
1230 | ||
1231 | di->time = jiffies; | |
1232 | di->lease_shared_gen = 0; | |
1233 | di->offset = 0; | |
1234 | ||
1235 | spin_unlock(&realdn->d_lock); | |
1236 | dput(realdn); | |
1237 | } | |
1238 | } | |
1239 | ||
355da1eb SW |
1240 | /* dn must be unhashed */ |
1241 | if (!d_unhashed(dn)) | |
1242 | d_drop(dn); | |
41d28bca | 1243 | realdn = d_splice_alias(in, dn); |
355da1eb | 1244 | if (IS_ERR(realdn)) { |
d69ed05a SW |
1245 | pr_err("splice_dentry error %ld %p inode %p ino %llx.%llx\n", |
1246 | PTR_ERR(realdn), dn, in, ceph_vinop(in)); | |
2bf996ac YZ |
1247 | return PTR_ERR(realdn); |
1248 | } | |
1249 | ||
1250 | if (realdn) { | |
355da1eb SW |
1251 | dout("dn %p (%d) spliced with %p (%d) " |
1252 | "inode %p ino %llx.%llx\n", | |
84d08fa8 AV |
1253 | dn, d_count(dn), |
1254 | realdn, d_count(realdn), | |
2b0143b5 | 1255 | d_inode(realdn), ceph_vinop(d_inode(realdn))); |
355da1eb | 1256 | dput(dn); |
2bf996ac | 1257 | *pdn = realdn; |
355da1eb SW |
1258 | } else { |
1259 | BUG_ON(!ceph_dentry(dn)); | |
355da1eb | 1260 | dout("dn %p attached to %p ino %llx.%llx\n", |
2b0143b5 | 1261 | dn, d_inode(dn), ceph_vinop(d_inode(dn))); |
355da1eb | 1262 | } |
2bf996ac | 1263 | return 0; |
355da1eb SW |
1264 | } |
1265 | ||
1266 | /* | |
1267 | * Incorporate results into the local cache. This is either just | |
1268 | * one inode, or a directory, dentry, and possibly linked-to inode (e.g., | |
1269 | * after a lookup). | |
1270 | * | |
1271 | * A reply may contain | |
1272 | * a directory inode along with a dentry. | |
1273 | * and/or a target inode | |
1274 | * | |
1275 | * Called with snap_rwsem (read). | |
1276 | */ | |
f5a03b08 | 1277 | int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req) |
355da1eb | 1278 | { |
f5a03b08 | 1279 | struct ceph_mds_session *session = req->r_session; |
355da1eb SW |
1280 | struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; |
1281 | struct inode *in = NULL; | |
f5d55f03 | 1282 | struct ceph_vino tvino, dvino; |
3d14c5d2 | 1283 | struct ceph_fs_client *fsc = ceph_sb_to_client(sb); |
355da1eb SW |
1284 | int err = 0; |
1285 | ||
1286 | dout("fill_trace %p is_dentry %d is_target %d\n", req, | |
1287 | rinfo->head->is_dentry, rinfo->head->is_target); | |
1288 | ||
355da1eb SW |
1289 | if (!rinfo->head->is_target && !rinfo->head->is_dentry) { |
1290 | dout("fill_trace reply is empty!\n"); | |
3dd69aab | 1291 | if (rinfo->head->result == 0 && req->r_parent) |
167c9e35 | 1292 | ceph_invalidate_dir_request(req); |
355da1eb SW |
1293 | return 0; |
1294 | } | |
1295 | ||
1296 | if (rinfo->head->is_dentry) { | |
3dd69aab | 1297 | struct inode *dir = req->r_parent; |
5b1daecd | 1298 | |
6c5e50fa | 1299 | if (dir) { |
966c7160 JL |
1300 | err = ceph_fill_inode(dir, NULL, &rinfo->diri, |
1301 | rinfo->dirfrag, session, -1, | |
1302 | &req->r_caps_reservation); | |
6c5e50fa | 1303 | if (err < 0) |
19913b4e | 1304 | goto done; |
6c5e50fa SW |
1305 | } else { |
1306 | WARN_ON_ONCE(1); | |
1307 | } | |
19913b4e | 1308 | |
74c9e6bf YZ |
1309 | if (dir && req->r_op == CEPH_MDS_OP_LOOKUPNAME && |
1310 | test_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags) && | |
1311 | !test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags)) { | |
19913b4e YZ |
1312 | struct qstr dname; |
1313 | struct dentry *dn, *parent; | |
1314 | ||
1315 | BUG_ON(!rinfo->head->is_target); | |
1316 | BUG_ON(req->r_dentry); | |
1317 | ||
1318 | parent = d_find_any_alias(dir); | |
1319 | BUG_ON(!parent); | |
1320 | ||
1321 | dname.name = rinfo->dname; | |
1322 | dname.len = rinfo->dname_len; | |
8387ff25 | 1323 | dname.hash = full_name_hash(parent, dname.name, dname.len); |
f5d55f03 JL |
1324 | tvino.ino = le64_to_cpu(rinfo->targeti.in->ino); |
1325 | tvino.snap = le64_to_cpu(rinfo->targeti.in->snapid); | |
19913b4e YZ |
1326 | retry_lookup: |
1327 | dn = d_lookup(parent, &dname); | |
1328 | dout("d_lookup on parent=%p name=%.*s got %p\n", | |
1329 | parent, dname.len, dname.name, dn); | |
1330 | ||
1331 | if (!dn) { | |
1332 | dn = d_alloc(parent, &dname); | |
1333 | dout("d_alloc %p '%.*s' = %p\n", parent, | |
1334 | dname.len, dname.name, dn); | |
d37b1d99 | 1335 | if (!dn) { |
19913b4e YZ |
1336 | dput(parent); |
1337 | err = -ENOMEM; | |
1338 | goto done; | |
1339 | } | |
ad5cb123 | 1340 | err = 0; |
2b0143b5 | 1341 | } else if (d_really_is_positive(dn) && |
f5d55f03 JL |
1342 | (ceph_ino(d_inode(dn)) != tvino.ino || |
1343 | ceph_snap(d_inode(dn)) != tvino.snap)) { | |
19913b4e | 1344 | dout(" dn %p points to wrong inode %p\n", |
2b0143b5 | 1345 | dn, d_inode(dn)); |
933ad2c9 | 1346 | ceph_dir_clear_ordered(dir); |
19913b4e YZ |
1347 | d_delete(dn); |
1348 | dput(dn); | |
1349 | goto retry_lookup; | |
1350 | } | |
1351 | ||
1352 | req->r_dentry = dn; | |
1353 | dput(parent); | |
1354 | } | |
5b1daecd SW |
1355 | } |
1356 | ||
86b58d13 | 1357 | if (rinfo->head->is_target) { |
bca9fc14 JL |
1358 | /* Should be filled in by handle_reply */ |
1359 | BUG_ON(!req->r_target_inode); | |
86b58d13 | 1360 | |
bca9fc14 | 1361 | in = req->r_target_inode; |
966c7160 JL |
1362 | err = ceph_fill_inode(in, req->r_locked_page, &rinfo->targeti, |
1363 | NULL, session, | |
bc2de10d | 1364 | (!test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags) && |
3bb48b41 | 1365 | !test_bit(CEPH_MDS_R_ASYNC, &req->r_req_flags) && |
57c21994 | 1366 | rinfo->head->result == 0) ? req->r_fmode : -1, |
86b58d13 YZ |
1367 | &req->r_caps_reservation); |
1368 | if (err < 0) { | |
966c7160 | 1369 | pr_err("ceph_fill_inode badness %p %llx.%llx\n", |
86b58d13 | 1370 | in, ceph_vinop(in)); |
bca9fc14 | 1371 | req->r_target_inode = NULL; |
893e456b JL |
1372 | if (in->i_state & I_NEW) |
1373 | discard_new_inode(in); | |
68cbb805 JL |
1374 | else |
1375 | iput(in); | |
86b58d13 YZ |
1376 | goto done; |
1377 | } | |
893e456b JL |
1378 | if (in->i_state & I_NEW) |
1379 | unlock_new_inode(in); | |
86b58d13 YZ |
1380 | } |
1381 | ||
9358c6d4 SW |
1382 | /* |
1383 | * ignore null lease/binding on snapdir ENOENT, or else we | |
1384 | * will have trouble splicing in the virtual snapdir later | |
1385 | */ | |
3dd69aab JL |
1386 | if (rinfo->head->is_dentry && |
1387 | !test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags) && | |
1388 | test_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags) && | |
9358c6d4 | 1389 | (rinfo->head->is_target || strncmp(req->r_dentry->d_name.name, |
3d14c5d2 | 1390 | fsc->mount_options->snapdir_name, |
9358c6d4 | 1391 | req->r_dentry->d_name.len))) { |
355da1eb SW |
1392 | /* |
1393 | * lookup link rename : null -> possibly existing inode | |
1394 | * mknod symlink mkdir : null -> new inode | |
1395 | * unlink : linked -> null | |
1396 | */ | |
3dd69aab | 1397 | struct inode *dir = req->r_parent; |
355da1eb SW |
1398 | struct dentry *dn = req->r_dentry; |
1399 | bool have_dir_cap, have_lease; | |
1400 | ||
1401 | BUG_ON(!dn); | |
1402 | BUG_ON(!dir); | |
2b0143b5 | 1403 | BUG_ON(d_inode(dn->d_parent) != dir); |
f5d55f03 JL |
1404 | |
1405 | dvino.ino = le64_to_cpu(rinfo->diri.in->ino); | |
1406 | dvino.snap = le64_to_cpu(rinfo->diri.in->snapid); | |
1407 | ||
1408 | BUG_ON(ceph_ino(dir) != dvino.ino); | |
1409 | BUG_ON(ceph_snap(dir) != dvino.snap); | |
355da1eb | 1410 | |
355da1eb SW |
1411 | /* do we have a lease on the whole dir? */ |
1412 | have_dir_cap = | |
1413 | (le32_to_cpu(rinfo->diri.in->cap.caps) & | |
1414 | CEPH_CAP_FILE_SHARED); | |
1415 | ||
1416 | /* do we have a dn lease? */ | |
1417 | have_lease = have_dir_cap || | |
2f90b852 | 1418 | le32_to_cpu(rinfo->dlease->duration_ms); |
355da1eb SW |
1419 | if (!have_lease) |
1420 | dout("fill_trace no dentry lease or dir cap\n"); | |
1421 | ||
1422 | /* rename? */ | |
1423 | if (req->r_old_dentry && req->r_op == CEPH_MDS_OP_RENAME) { | |
0a8a70f9 YZ |
1424 | struct inode *olddir = req->r_old_dentry_dir; |
1425 | BUG_ON(!olddir); | |
1426 | ||
a455589f | 1427 | dout(" src %p '%pd' dst %p '%pd'\n", |
355da1eb | 1428 | req->r_old_dentry, |
a455589f AV |
1429 | req->r_old_dentry, |
1430 | dn, dn); | |
355da1eb SW |
1431 | dout("fill_trace doing d_move %p -> %p\n", |
1432 | req->r_old_dentry, dn); | |
c10f5e12 | 1433 | |
fdd4e158 YZ |
1434 | /* d_move screws up sibling dentries' offsets */ |
1435 | ceph_dir_clear_ordered(dir); | |
1436 | ceph_dir_clear_ordered(olddir); | |
1437 | ||
355da1eb | 1438 | d_move(req->r_old_dentry, dn); |
a455589f AV |
1439 | dout(" src %p '%pd' dst %p '%pd'\n", |
1440 | req->r_old_dentry, | |
355da1eb | 1441 | req->r_old_dentry, |
a455589f | 1442 | dn, dn); |
81a6cf2d | 1443 | |
c4a29f26 SW |
1444 | /* ensure target dentry is invalidated, despite |
1445 | rehashing bug in vfs_rename_dir */ | |
81a6cf2d SW |
1446 | ceph_invalidate_dentry_lease(dn); |
1447 | ||
99ccbd22 | 1448 | dout("dn %p gets new offset %lld\n", req->r_old_dentry, |
1cd3935b | 1449 | ceph_dentry(req->r_old_dentry)->offset); |
81a6cf2d | 1450 | |
2bf996ac YZ |
1451 | /* swap r_dentry and r_old_dentry in case that |
1452 | * splice_dentry() gets called later. This is safe | |
1453 | * because no other place will use them */ | |
1454 | req->r_dentry = req->r_old_dentry; | |
1455 | req->r_old_dentry = dn; | |
1456 | dn = req->r_dentry; | |
355da1eb SW |
1457 | } |
1458 | ||
1459 | /* null dentry? */ | |
1460 | if (!rinfo->head->is_target) { | |
1461 | dout("fill_trace null dentry\n"); | |
2b0143b5 | 1462 | if (d_really_is_positive(dn)) { |
355da1eb | 1463 | dout("d_delete %p\n", dn); |
5495c2d0 | 1464 | ceph_dir_clear_ordered(dir); |
355da1eb | 1465 | d_delete(dn); |
80d025ff JL |
1466 | } else if (have_lease) { |
1467 | if (d_unhashed(dn)) | |
f8b31710 | 1468 | d_add(dn, NULL); |
7ffe4fce XL |
1469 | } |
1470 | ||
1471 | if (!d_unhashed(dn) && have_lease) | |
543212b3 YZ |
1472 | update_dentry_lease(dir, dn, |
1473 | rinfo->dlease, session, | |
1474 | req->r_request_started); | |
355da1eb SW |
1475 | goto done; |
1476 | } | |
1477 | ||
1478 | /* attach proper inode */ | |
2b0143b5 | 1479 | if (d_really_is_negative(dn)) { |
70db4f36 | 1480 | ceph_dir_clear_ordered(dir); |
86b58d13 | 1481 | ihold(in); |
2bf996ac YZ |
1482 | err = splice_dentry(&req->r_dentry, in); |
1483 | if (err < 0) | |
355da1eb | 1484 | goto done; |
2bf996ac | 1485 | dn = req->r_dentry; /* may have spliced */ |
2b0143b5 | 1486 | } else if (d_really_is_positive(dn) && d_inode(dn) != in) { |
355da1eb | 1487 | dout(" %p links to %p %llx.%llx, not %llx.%llx\n", |
2b0143b5 | 1488 | dn, d_inode(dn), ceph_vinop(d_inode(dn)), |
86b58d13 | 1489 | ceph_vinop(in)); |
200fd27c | 1490 | d_invalidate(dn); |
355da1eb | 1491 | have_lease = false; |
355da1eb SW |
1492 | } |
1493 | ||
f5d55f03 | 1494 | if (have_lease) { |
543212b3 YZ |
1495 | update_dentry_lease(dir, dn, |
1496 | rinfo->dlease, session, | |
1497 | req->r_request_started); | |
f5d55f03 | 1498 | } |
355da1eb | 1499 | dout(" final dn %p\n", dn); |
bc2de10d JL |
1500 | } else if ((req->r_op == CEPH_MDS_OP_LOOKUPSNAP || |
1501 | req->r_op == CEPH_MDS_OP_MKSNAP) && | |
1f08529c | 1502 | test_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags) && |
bc2de10d | 1503 | !test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags)) { |
3dd69aab | 1504 | struct inode *dir = req->r_parent; |
355da1eb SW |
1505 | |
1506 | /* fill out a snapdir LOOKUPSNAP dentry */ | |
0a8a70f9 YZ |
1507 | BUG_ON(!dir); |
1508 | BUG_ON(ceph_snap(dir) != CEPH_SNAPDIR); | |
2bf996ac YZ |
1509 | BUG_ON(!req->r_dentry); |
1510 | dout(" linking snapped dir %p to dn %p\n", in, req->r_dentry); | |
70db4f36 | 1511 | ceph_dir_clear_ordered(dir); |
86b58d13 | 1512 | ihold(in); |
2bf996ac YZ |
1513 | err = splice_dentry(&req->r_dentry, in); |
1514 | if (err < 0) | |
355da1eb | 1515 | goto done; |
543212b3 YZ |
1516 | } else if (rinfo->head->is_dentry && req->r_dentry) { |
1517 | /* parent inode is not locked, be carefull */ | |
cdde7c43 | 1518 | struct ceph_vino *ptvino = NULL; |
543212b3 YZ |
1519 | dvino.ino = le64_to_cpu(rinfo->diri.in->ino); |
1520 | dvino.snap = le64_to_cpu(rinfo->diri.in->snapid); | |
1521 | if (rinfo->head->is_target) { | |
1522 | tvino.ino = le64_to_cpu(rinfo->targeti.in->ino); | |
1523 | tvino.snap = le64_to_cpu(rinfo->targeti.in->snapid); | |
1524 | ptvino = &tvino; | |
cdde7c43 | 1525 | } |
543212b3 YZ |
1526 | update_dentry_lease_careful(req->r_dentry, rinfo->dlease, |
1527 | session, req->r_request_started, | |
1528 | rinfo->dname, rinfo->dname_len, | |
1529 | &dvino, ptvino); | |
355da1eb | 1530 | } |
355da1eb SW |
1531 | done: |
1532 | dout("fill_trace done err=%d\n", err); | |
1533 | return err; | |
1534 | } | |
1535 | ||
1536 | /* | |
1537 | * Prepopulate our cache with readdir results, leases, etc. | |
1538 | */ | |
79f9f99a SW |
1539 | static int readdir_prepopulate_inodes_only(struct ceph_mds_request *req, |
1540 | struct ceph_mds_session *session) | |
1541 | { | |
1542 | struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; | |
1543 | int i, err = 0; | |
1544 | ||
1545 | for (i = 0; i < rinfo->dir_nr; i++) { | |
2a5beea3 | 1546 | struct ceph_mds_reply_dir_entry *rde = rinfo->dir_entries + i; |
79f9f99a SW |
1547 | struct ceph_vino vino; |
1548 | struct inode *in; | |
1549 | int rc; | |
1550 | ||
2a5beea3 YZ |
1551 | vino.ino = le64_to_cpu(rde->inode.in->ino); |
1552 | vino.snap = le64_to_cpu(rde->inode.in->snapid); | |
79f9f99a SW |
1553 | |
1554 | in = ceph_get_inode(req->r_dentry->d_sb, vino); | |
1555 | if (IS_ERR(in)) { | |
1556 | err = PTR_ERR(in); | |
1557 | dout("new_inode badness got %d\n", err); | |
1558 | continue; | |
1559 | } | |
966c7160 JL |
1560 | rc = ceph_fill_inode(in, NULL, &rde->inode, NULL, session, |
1561 | -1, &req->r_caps_reservation); | |
79f9f99a | 1562 | if (rc < 0) { |
966c7160 JL |
1563 | pr_err("ceph_fill_inode badness on %p got %d\n", |
1564 | in, rc); | |
79f9f99a | 1565 | err = rc; |
893e456b JL |
1566 | if (in->i_state & I_NEW) { |
1567 | ihold(in); | |
1568 | discard_new_inode(in); | |
1569 | } | |
1570 | } else if (in->i_state & I_NEW) { | |
1571 | unlock_new_inode(in); | |
79f9f99a | 1572 | } |
893e456b | 1573 | |
23c2c76e | 1574 | iput(in); |
79f9f99a SW |
1575 | } |
1576 | ||
1577 | return err; | |
1578 | } | |
1579 | ||
fdd4e158 YZ |
1580 | void ceph_readdir_cache_release(struct ceph_readdir_cache_control *ctl) |
1581 | { | |
1582 | if (ctl->page) { | |
1583 | kunmap(ctl->page); | |
09cbfeaf | 1584 | put_page(ctl->page); |
fdd4e158 YZ |
1585 | ctl->page = NULL; |
1586 | } | |
1587 | } | |
1588 | ||
1589 | static int fill_readdir_cache(struct inode *dir, struct dentry *dn, | |
1590 | struct ceph_readdir_cache_control *ctl, | |
1591 | struct ceph_mds_request *req) | |
1592 | { | |
1593 | struct ceph_inode_info *ci = ceph_inode(dir); | |
09cbfeaf | 1594 | unsigned nsize = PAGE_SIZE / sizeof(struct dentry*); |
fdd4e158 YZ |
1595 | unsigned idx = ctl->index % nsize; |
1596 | pgoff_t pgoff = ctl->index / nsize; | |
1597 | ||
1598 | if (!ctl->page || pgoff != page_index(ctl->page)) { | |
1599 | ceph_readdir_cache_release(ctl); | |
af5e5eb5 YZ |
1600 | if (idx == 0) |
1601 | ctl->page = grab_cache_page(&dir->i_data, pgoff); | |
1602 | else | |
1603 | ctl->page = find_lock_page(&dir->i_data, pgoff); | |
fdd4e158 YZ |
1604 | if (!ctl->page) { |
1605 | ctl->index = -1; | |
af5e5eb5 | 1606 | return idx == 0 ? -ENOMEM : 0; |
fdd4e158 YZ |
1607 | } |
1608 | /* reading/filling the cache are serialized by | |
810313c5 | 1609 | * i_rwsem, no need to use page lock */ |
fdd4e158 YZ |
1610 | unlock_page(ctl->page); |
1611 | ctl->dentries = kmap(ctl->page); | |
af5e5eb5 | 1612 | if (idx == 0) |
09cbfeaf | 1613 | memset(ctl->dentries, 0, PAGE_SIZE); |
fdd4e158 YZ |
1614 | } |
1615 | ||
1616 | if (req->r_dir_release_cnt == atomic64_read(&ci->i_release_count) && | |
1617 | req->r_dir_ordered_cnt == atomic64_read(&ci->i_ordered_count)) { | |
1618 | dout("readdir cache dn %p idx %d\n", dn, ctl->index); | |
1619 | ctl->dentries[idx] = dn; | |
1620 | ctl->index++; | |
1621 | } else { | |
1622 | dout("disable readdir cache\n"); | |
1623 | ctl->index = -1; | |
1624 | } | |
1625 | return 0; | |
1626 | } | |
1627 | ||
355da1eb SW |
1628 | int ceph_readdir_prepopulate(struct ceph_mds_request *req, |
1629 | struct ceph_mds_session *session) | |
1630 | { | |
1631 | struct dentry *parent = req->r_dentry; | |
f3c4ebe6 | 1632 | struct ceph_inode_info *ci = ceph_inode(d_inode(parent)); |
355da1eb SW |
1633 | struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; |
1634 | struct qstr dname; | |
1635 | struct dentry *dn; | |
1636 | struct inode *in; | |
315f2408 | 1637 | int err = 0, skipped = 0, ret, i; |
0f51a983 | 1638 | u32 frag = le32_to_cpu(req->r_args.readdir.frag); |
f3c4ebe6 YZ |
1639 | u32 last_hash = 0; |
1640 | u32 fpos_offset; | |
fdd4e158 YZ |
1641 | struct ceph_readdir_cache_control cache_ctl = {}; |
1642 | ||
bc2de10d | 1643 | if (test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags)) |
fdd4e158 | 1644 | return readdir_prepopulate_inodes_only(req, session); |
81c6aea5 | 1645 | |
79162547 YZ |
1646 | if (rinfo->hash_order) { |
1647 | if (req->r_path2) { | |
1648 | last_hash = ceph_str_hash(ci->i_dir_layout.dl_dir_hash, | |
1649 | req->r_path2, | |
1650 | strlen(req->r_path2)); | |
1651 | last_hash = ceph_frag_value(last_hash); | |
1652 | } else if (rinfo->offset_hash) { | |
1653 | /* mds understands offset_hash */ | |
1654 | WARN_ON_ONCE(req->r_readdir_offset != 2); | |
0f51a983 | 1655 | last_hash = le32_to_cpu(req->r_args.readdir.offset_hash); |
79162547 | 1656 | } |
f3c4ebe6 YZ |
1657 | } |
1658 | ||
81c6aea5 YZ |
1659 | if (rinfo->dir_dir && |
1660 | le32_to_cpu(rinfo->dir_dir->frag) != frag) { | |
1661 | dout("readdir_prepopulate got new frag %x -> %x\n", | |
1662 | frag, le32_to_cpu(rinfo->dir_dir->frag)); | |
1663 | frag = le32_to_cpu(rinfo->dir_dir->frag); | |
f3c4ebe6 | 1664 | if (!rinfo->hash_order) |
fdd4e158 | 1665 | req->r_readdir_offset = 2; |
81c6aea5 | 1666 | } |
355da1eb SW |
1667 | |
1668 | if (le32_to_cpu(rinfo->head->op) == CEPH_MDS_OP_LSSNAP) { | |
355da1eb SW |
1669 | dout("readdir_prepopulate %d items under SNAPDIR dn %p\n", |
1670 | rinfo->dir_nr, parent); | |
1671 | } else { | |
1672 | dout("readdir_prepopulate %d items under dn %p\n", | |
1673 | rinfo->dir_nr, parent); | |
1674 | if (rinfo->dir_dir) | |
2b0143b5 | 1675 | ceph_fill_dirfrag(d_inode(parent), rinfo->dir_dir); |
355da1eb | 1676 | |
8d45b911 YZ |
1677 | if (ceph_frag_is_leftmost(frag) && |
1678 | req->r_readdir_offset == 2 && | |
1679 | !(rinfo->hash_order && last_hash)) { | |
1680 | /* note dir version at start of readdir so we can | |
1681 | * tell if any dentries get dropped */ | |
1682 | req->r_dir_release_cnt = | |
1683 | atomic64_read(&ci->i_release_count); | |
1684 | req->r_dir_ordered_cnt = | |
1685 | atomic64_read(&ci->i_ordered_count); | |
1686 | req->r_readdir_cache_idx = 0; | |
1687 | } | |
fdd4e158 YZ |
1688 | } |
1689 | ||
1690 | cache_ctl.index = req->r_readdir_cache_idx; | |
f3c4ebe6 | 1691 | fpos_offset = req->r_readdir_offset; |
fdd4e158 | 1692 | |
86b58d13 | 1693 | /* FIXME: release caps/leases if error occurs */ |
355da1eb | 1694 | for (i = 0; i < rinfo->dir_nr; i++) { |
2a5beea3 | 1695 | struct ceph_mds_reply_dir_entry *rde = rinfo->dir_entries + i; |
543212b3 | 1696 | struct ceph_vino tvino; |
355da1eb | 1697 | |
2a5beea3 YZ |
1698 | dname.name = rde->name; |
1699 | dname.len = rde->name_len; | |
8387ff25 | 1700 | dname.hash = full_name_hash(parent, dname.name, dname.len); |
355da1eb | 1701 | |
f5d55f03 JL |
1702 | tvino.ino = le64_to_cpu(rde->inode.in->ino); |
1703 | tvino.snap = le64_to_cpu(rde->inode.in->snapid); | |
355da1eb | 1704 | |
f3c4ebe6 YZ |
1705 | if (rinfo->hash_order) { |
1706 | u32 hash = ceph_str_hash(ci->i_dir_layout.dl_dir_hash, | |
1707 | rde->name, rde->name_len); | |
1708 | hash = ceph_frag_value(hash); | |
1709 | if (hash != last_hash) | |
1710 | fpos_offset = 2; | |
1711 | last_hash = hash; | |
1712 | rde->offset = ceph_make_fpos(hash, fpos_offset++, true); | |
1713 | } else { | |
1714 | rde->offset = ceph_make_fpos(frag, fpos_offset++, false); | |
1715 | } | |
355da1eb SW |
1716 | |
1717 | retry_lookup: | |
1718 | dn = d_lookup(parent, &dname); | |
1719 | dout("d_lookup on parent=%p name=%.*s got %p\n", | |
1720 | parent, dname.len, dname.name, dn); | |
1721 | ||
1722 | if (!dn) { | |
1723 | dn = d_alloc(parent, &dname); | |
1724 | dout("d_alloc %p '%.*s' = %p\n", parent, | |
1725 | dname.len, dname.name, dn); | |
d37b1d99 | 1726 | if (!dn) { |
355da1eb SW |
1727 | dout("d_alloc badness\n"); |
1728 | err = -ENOMEM; | |
1729 | goto out; | |
1730 | } | |
2b0143b5 | 1731 | } else if (d_really_is_positive(dn) && |
f5d55f03 JL |
1732 | (ceph_ino(d_inode(dn)) != tvino.ino || |
1733 | ceph_snap(d_inode(dn)) != tvino.snap)) { | |
5495c2d0 | 1734 | struct ceph_dentry_info *di = ceph_dentry(dn); |
355da1eb | 1735 | dout(" dn %p points to wrong inode %p\n", |
2b0143b5 | 1736 | dn, d_inode(dn)); |
5495c2d0 YZ |
1737 | |
1738 | spin_lock(&dn->d_lock); | |
1739 | if (di->offset > 0 && | |
1740 | di->lease_shared_gen == | |
1741 | atomic_read(&ci->i_shared_gen)) { | |
1742 | __ceph_dir_clear_ordered(ci); | |
1743 | di->offset = 0; | |
1744 | } | |
1745 | spin_unlock(&dn->d_lock); | |
1746 | ||
355da1eb SW |
1747 | d_delete(dn); |
1748 | dput(dn); | |
1749 | goto retry_lookup; | |
355da1eb SW |
1750 | } |
1751 | ||
355da1eb | 1752 | /* inode */ |
2b0143b5 DH |
1753 | if (d_really_is_positive(dn)) { |
1754 | in = d_inode(dn); | |
355da1eb | 1755 | } else { |
f5d55f03 | 1756 | in = ceph_get_inode(parent->d_sb, tvino); |
ac1f12ef | 1757 | if (IS_ERR(in)) { |
355da1eb | 1758 | dout("new_inode badness\n"); |
2744c171 | 1759 | d_drop(dn); |
355da1eb | 1760 | dput(dn); |
ac1f12ef | 1761 | err = PTR_ERR(in); |
355da1eb SW |
1762 | goto out; |
1763 | } | |
355da1eb SW |
1764 | } |
1765 | ||
966c7160 JL |
1766 | ret = ceph_fill_inode(in, NULL, &rde->inode, NULL, session, |
1767 | -1, &req->r_caps_reservation); | |
fdd4e158 | 1768 | if (ret < 0) { |
966c7160 | 1769 | pr_err("ceph_fill_inode badness on %p\n", in); |
3e1d0452 | 1770 | if (d_really_is_negative(dn)) { |
893e456b JL |
1771 | if (in->i_state & I_NEW) { |
1772 | ihold(in); | |
1773 | discard_new_inode(in); | |
1774 | } | |
23c2c76e | 1775 | iput(in); |
3e1d0452 | 1776 | } |
86b58d13 | 1777 | d_drop(dn); |
fdd4e158 | 1778 | err = ret; |
d69ed05a | 1779 | goto next_item; |
355da1eb | 1780 | } |
893e456b JL |
1781 | if (in->i_state & I_NEW) |
1782 | unlock_new_inode(in); | |
86b58d13 | 1783 | |
2b0143b5 | 1784 | if (d_really_is_negative(dn)) { |
315f2408 YZ |
1785 | if (ceph_security_xattr_deadlock(in)) { |
1786 | dout(" skip splicing dn %p to inode %p" | |
1787 | " (security xattr deadlock)\n", dn, in); | |
23c2c76e | 1788 | iput(in); |
315f2408 YZ |
1789 | skipped++; |
1790 | goto next_item; | |
1791 | } | |
1792 | ||
2bf996ac YZ |
1793 | err = splice_dentry(&dn, in); |
1794 | if (err < 0) | |
86b58d13 | 1795 | goto next_item; |
86b58d13 YZ |
1796 | } |
1797 | ||
f3c4ebe6 | 1798 | ceph_dentry(dn)->offset = rde->offset; |
86b58d13 | 1799 | |
543212b3 YZ |
1800 | update_dentry_lease(d_inode(parent), dn, |
1801 | rde->lease, req->r_session, | |
1802 | req->r_request_started); | |
fdd4e158 | 1803 | |
315f2408 | 1804 | if (err == 0 && skipped == 0 && cache_ctl.index >= 0) { |
fdd4e158 YZ |
1805 | ret = fill_readdir_cache(d_inode(parent), dn, |
1806 | &cache_ctl, req); | |
1807 | if (ret < 0) | |
1808 | err = ret; | |
1809 | } | |
d69ed05a | 1810 | next_item: |
2bf996ac | 1811 | dput(dn); |
355da1eb | 1812 | } |
355da1eb | 1813 | out: |
315f2408 | 1814 | if (err == 0 && skipped == 0) { |
bc2de10d | 1815 | set_bit(CEPH_MDS_R_DID_PREPOPULATE, &req->r_req_flags); |
fdd4e158 YZ |
1816 | req->r_readdir_cache_idx = cache_ctl.index; |
1817 | } | |
1818 | ceph_readdir_cache_release(&cache_ctl); | |
355da1eb SW |
1819 | dout("readdir_prepopulate done\n"); |
1820 | return err; | |
1821 | } | |
1822 | ||
efb0ca76 | 1823 | bool ceph_inode_set_size(struct inode *inode, loff_t size) |
355da1eb SW |
1824 | { |
1825 | struct ceph_inode_info *ci = ceph_inode(inode); | |
efb0ca76 | 1826 | bool ret; |
355da1eb | 1827 | |
be655596 | 1828 | spin_lock(&ci->i_ceph_lock); |
2d6795fb | 1829 | dout("set_size %p %llu -> %llu\n", inode, i_size_read(inode), size); |
99c88e69 | 1830 | i_size_write(inode, size); |
400e1286 | 1831 | ceph_fscache_update(inode); |
224a7542 | 1832 | inode->i_blocks = calc_inode_blocks(size); |
355da1eb | 1833 | |
efb0ca76 | 1834 | ret = __ceph_should_report_size(ci); |
355da1eb | 1835 | |
be655596 | 1836 | spin_unlock(&ci->i_ceph_lock); |
400e1286 | 1837 | |
355da1eb SW |
1838 | return ret; |
1839 | } | |
1840 | ||
64f28c62 | 1841 | void ceph_queue_inode_work(struct inode *inode, int work_bit) |
355da1eb | 1842 | { |
64f28c62 | 1843 | struct ceph_fs_client *fsc = ceph_inode_to_client(inode); |
1cf89a8d | 1844 | struct ceph_inode_info *ci = ceph_inode(inode); |
64f28c62 | 1845 | set_bit(work_bit, &ci->i_work_mask); |
1cf89a8d YZ |
1846 | |
1847 | ihold(inode); | |
64f28c62 JL |
1848 | if (queue_work(fsc->inode_wq, &ci->i_work)) { |
1849 | dout("queue_inode_work %p, mask=%lx\n", inode, ci->i_work_mask); | |
1cf89a8d | 1850 | } else { |
64f28c62 | 1851 | dout("queue_inode_work %p already queued, mask=%lx\n", |
1cf89a8d YZ |
1852 | inode, ci->i_work_mask); |
1853 | iput(inode); | |
1854 | } | |
1855 | } | |
1856 | ||
1857 | static void ceph_do_invalidate_pages(struct inode *inode) | |
1858 | { | |
1859 | struct ceph_inode_info *ci = ceph_inode(inode); | |
355da1eb SW |
1860 | u32 orig_gen; |
1861 | int check = 0; | |
1862 | ||
400e1286 JL |
1863 | ceph_fscache_invalidate(inode, false); |
1864 | ||
b0d7c223 | 1865 | mutex_lock(&ci->i_truncate_mutex); |
6c93df5d | 1866 | |
5d6451b1 | 1867 | if (ceph_inode_is_shutdown(inode)) { |
6407fbb9 JL |
1868 | pr_warn_ratelimited("%s: inode %llx.%llx is shut down\n", |
1869 | __func__, ceph_vinop(inode)); | |
6c93df5d YZ |
1870 | mapping_set_error(inode->i_mapping, -EIO); |
1871 | truncate_pagecache(inode, 0); | |
1872 | mutex_unlock(&ci->i_truncate_mutex); | |
1873 | goto out; | |
1874 | } | |
1875 | ||
be655596 | 1876 | spin_lock(&ci->i_ceph_lock); |
355da1eb SW |
1877 | dout("invalidate_pages %p gen %d revoking %d\n", inode, |
1878 | ci->i_rdcache_gen, ci->i_rdcache_revoking); | |
cd045cb4 | 1879 | if (ci->i_rdcache_revoking != ci->i_rdcache_gen) { |
9563f88c YZ |
1880 | if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE)) |
1881 | check = 1; | |
be655596 | 1882 | spin_unlock(&ci->i_ceph_lock); |
b0d7c223 | 1883 | mutex_unlock(&ci->i_truncate_mutex); |
355da1eb SW |
1884 | goto out; |
1885 | } | |
1886 | orig_gen = ci->i_rdcache_gen; | |
be655596 | 1887 | spin_unlock(&ci->i_ceph_lock); |
355da1eb | 1888 | |
9abd4db7 | 1889 | if (invalidate_inode_pages2(inode->i_mapping) < 0) { |
6407fbb9 JL |
1890 | pr_err("invalidate_inode_pages2 %llx.%llx failed\n", |
1891 | ceph_vinop(inode)); | |
9abd4db7 | 1892 | } |
355da1eb | 1893 | |
be655596 | 1894 | spin_lock(&ci->i_ceph_lock); |
cd045cb4 SW |
1895 | if (orig_gen == ci->i_rdcache_gen && |
1896 | orig_gen == ci->i_rdcache_revoking) { | |
355da1eb SW |
1897 | dout("invalidate_pages %p gen %d successful\n", inode, |
1898 | ci->i_rdcache_gen); | |
cd045cb4 | 1899 | ci->i_rdcache_revoking--; |
355da1eb SW |
1900 | check = 1; |
1901 | } else { | |
cd045cb4 SW |
1902 | dout("invalidate_pages %p gen %d raced, now %d revoking %d\n", |
1903 | inode, orig_gen, ci->i_rdcache_gen, | |
1904 | ci->i_rdcache_revoking); | |
9563f88c YZ |
1905 | if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE)) |
1906 | check = 1; | |
355da1eb | 1907 | } |
be655596 | 1908 | spin_unlock(&ci->i_ceph_lock); |
b0d7c223 | 1909 | mutex_unlock(&ci->i_truncate_mutex); |
9563f88c | 1910 | out: |
355da1eb | 1911 | if (check) |
e4b731cc | 1912 | ceph_check_caps(ci, 0); |
3c6f6b79 SW |
1913 | } |
1914 | ||
355da1eb | 1915 | /* |
355da1eb SW |
1916 | * Make sure any pending truncation is applied before doing anything |
1917 | * that may depend on it. | |
1918 | */ | |
b415bf4f | 1919 | void __ceph_do_pending_vmtruncate(struct inode *inode) |
355da1eb SW |
1920 | { |
1921 | struct ceph_inode_info *ci = ceph_inode(inode); | |
1922 | u64 to; | |
a85f50b6 | 1923 | int wrbuffer_refs, finish = 0; |
355da1eb | 1924 | |
b0d7c223 | 1925 | mutex_lock(&ci->i_truncate_mutex); |
355da1eb | 1926 | retry: |
be655596 | 1927 | spin_lock(&ci->i_ceph_lock); |
355da1eb SW |
1928 | if (ci->i_truncate_pending == 0) { |
1929 | dout("__do_pending_vmtruncate %p none pending\n", inode); | |
be655596 | 1930 | spin_unlock(&ci->i_ceph_lock); |
b0d7c223 | 1931 | mutex_unlock(&ci->i_truncate_mutex); |
355da1eb SW |
1932 | return; |
1933 | } | |
1934 | ||
1935 | /* | |
1936 | * make sure any dirty snapped pages are flushed before we | |
1937 | * possibly truncate them.. so write AND block! | |
1938 | */ | |
1939 | if (ci->i_wrbuffer_ref_head < ci->i_wrbuffer_ref) { | |
c8fd0d37 | 1940 | spin_unlock(&ci->i_ceph_lock); |
355da1eb SW |
1941 | dout("__do_pending_vmtruncate %p flushing snaps first\n", |
1942 | inode); | |
355da1eb SW |
1943 | filemap_write_and_wait_range(&inode->i_data, 0, |
1944 | inode->i_sb->s_maxbytes); | |
1945 | goto retry; | |
1946 | } | |
1947 | ||
b0d7c223 YZ |
1948 | /* there should be no reader or writer */ |
1949 | WARN_ON_ONCE(ci->i_rd_ref || ci->i_wr_ref); | |
1950 | ||
355da1eb SW |
1951 | to = ci->i_truncate_size; |
1952 | wrbuffer_refs = ci->i_wrbuffer_ref; | |
1953 | dout("__do_pending_vmtruncate %p (%d) to %lld\n", inode, | |
1954 | ci->i_truncate_pending, to); | |
be655596 | 1955 | spin_unlock(&ci->i_ceph_lock); |
355da1eb | 1956 | |
400e1286 | 1957 | ceph_fscache_resize(inode, to); |
4e217b5d | 1958 | truncate_pagecache(inode, to); |
355da1eb | 1959 | |
be655596 | 1960 | spin_lock(&ci->i_ceph_lock); |
a85f50b6 YZ |
1961 | if (to == ci->i_truncate_size) { |
1962 | ci->i_truncate_pending = 0; | |
1963 | finish = 1; | |
1964 | } | |
be655596 | 1965 | spin_unlock(&ci->i_ceph_lock); |
a85f50b6 YZ |
1966 | if (!finish) |
1967 | goto retry; | |
355da1eb | 1968 | |
b0d7c223 YZ |
1969 | mutex_unlock(&ci->i_truncate_mutex); |
1970 | ||
355da1eb | 1971 | if (wrbuffer_refs == 0) |
e4b731cc | 1972 | ceph_check_caps(ci, 0); |
a85f50b6 YZ |
1973 | |
1974 | wake_up_all(&ci->i_cap_wq); | |
355da1eb SW |
1975 | } |
1976 | ||
1cf89a8d YZ |
1977 | static void ceph_inode_work(struct work_struct *work) |
1978 | { | |
1979 | struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info, | |
1980 | i_work); | |
874c8ca1 | 1981 | struct inode *inode = &ci->netfs.inode; |
1cf89a8d YZ |
1982 | |
1983 | if (test_and_clear_bit(CEPH_I_WORK_WRITEBACK, &ci->i_work_mask)) { | |
1984 | dout("writeback %p\n", inode); | |
1985 | filemap_fdatawrite(&inode->i_data); | |
1986 | } | |
1987 | if (test_and_clear_bit(CEPH_I_WORK_INVALIDATE_PAGES, &ci->i_work_mask)) | |
1988 | ceph_do_invalidate_pages(inode); | |
1989 | ||
1990 | if (test_and_clear_bit(CEPH_I_WORK_VMTRUNCATE, &ci->i_work_mask)) | |
1991 | __ceph_do_pending_vmtruncate(inode); | |
1992 | ||
a8810cdc | 1993 | if (test_and_clear_bit(CEPH_I_WORK_CHECK_CAPS, &ci->i_work_mask)) |
e4b731cc | 1994 | ceph_check_caps(ci, 0); |
a8810cdc JL |
1995 | |
1996 | if (test_and_clear_bit(CEPH_I_WORK_FLUSH_SNAPS, &ci->i_work_mask)) | |
1997 | ceph_flush_snaps(ci, NULL); | |
1998 | ||
1cf89a8d YZ |
1999 | iput(inode); |
2000 | } | |
2001 | ||
355da1eb SW |
2002 | /* |
2003 | * symlinks | |
2004 | */ | |
355da1eb | 2005 | static const struct inode_operations ceph_symlink_iops = { |
6b255391 | 2006 | .get_link = simple_get_link, |
0b932672 YZ |
2007 | .setattr = ceph_setattr, |
2008 | .getattr = ceph_getattr, | |
0b932672 | 2009 | .listxattr = ceph_listxattr, |
355da1eb SW |
2010 | }; |
2011 | ||
a26fecca | 2012 | int __ceph_setattr(struct inode *inode, struct iattr *attr) |
355da1eb | 2013 | { |
355da1eb | 2014 | struct ceph_inode_info *ci = ceph_inode(inode); |
c62498d7 | 2015 | unsigned int ia_valid = attr->ia_valid; |
355da1eb | 2016 | struct ceph_mds_request *req; |
a26fecca | 2017 | struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc; |
f66fd9f0 | 2018 | struct ceph_cap_flush *prealloc_cf; |
355da1eb SW |
2019 | int issued; |
2020 | int release = 0, dirtied = 0; | |
2021 | int mask = 0; | |
2022 | int err = 0; | |
fca65b4a | 2023 | int inode_dirty_flags = 0; |
604d1b02 | 2024 | bool lock_snap_rwsem = false; |
355da1eb | 2025 | |
f66fd9f0 YZ |
2026 | prealloc_cf = ceph_alloc_cap_flush(); |
2027 | if (!prealloc_cf) | |
2028 | return -ENOMEM; | |
2029 | ||
355da1eb SW |
2030 | req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETATTR, |
2031 | USE_AUTH_MDS); | |
f66fd9f0 YZ |
2032 | if (IS_ERR(req)) { |
2033 | ceph_free_cap_flush(prealloc_cf); | |
355da1eb | 2034 | return PTR_ERR(req); |
f66fd9f0 | 2035 | } |
355da1eb | 2036 | |
be655596 | 2037 | spin_lock(&ci->i_ceph_lock); |
355da1eb | 2038 | issued = __ceph_caps_issued(ci, NULL); |
604d1b02 YZ |
2039 | |
2040 | if (!ci->i_head_snapc && | |
2041 | (issued & (CEPH_CAP_ANY_EXCL | CEPH_CAP_FILE_WR))) { | |
2042 | lock_snap_rwsem = true; | |
2043 | if (!down_read_trylock(&mdsc->snap_rwsem)) { | |
2044 | spin_unlock(&ci->i_ceph_lock); | |
2045 | down_read(&mdsc->snap_rwsem); | |
2046 | spin_lock(&ci->i_ceph_lock); | |
2047 | issued = __ceph_caps_issued(ci, NULL); | |
2048 | } | |
2049 | } | |
2050 | ||
355da1eb SW |
2051 | dout("setattr %p issued %s\n", inode, ceph_cap_string(issued)); |
2052 | ||
2053 | if (ia_valid & ATTR_UID) { | |
2054 | dout("setattr %p uid %d -> %d\n", inode, | |
bd2bae6a EB |
2055 | from_kuid(&init_user_ns, inode->i_uid), |
2056 | from_kuid(&init_user_ns, attr->ia_uid)); | |
355da1eb SW |
2057 | if (issued & CEPH_CAP_AUTH_EXCL) { |
2058 | inode->i_uid = attr->ia_uid; | |
2059 | dirtied |= CEPH_CAP_AUTH_EXCL; | |
2060 | } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || | |
ab871b90 EB |
2061 | !uid_eq(attr->ia_uid, inode->i_uid)) { |
2062 | req->r_args.setattr.uid = cpu_to_le32( | |
2063 | from_kuid(&init_user_ns, attr->ia_uid)); | |
355da1eb SW |
2064 | mask |= CEPH_SETATTR_UID; |
2065 | release |= CEPH_CAP_AUTH_SHARED; | |
2066 | } | |
2067 | } | |
2068 | if (ia_valid & ATTR_GID) { | |
2069 | dout("setattr %p gid %d -> %d\n", inode, | |
bd2bae6a EB |
2070 | from_kgid(&init_user_ns, inode->i_gid), |
2071 | from_kgid(&init_user_ns, attr->ia_gid)); | |
355da1eb SW |
2072 | if (issued & CEPH_CAP_AUTH_EXCL) { |
2073 | inode->i_gid = attr->ia_gid; | |
2074 | dirtied |= CEPH_CAP_AUTH_EXCL; | |
2075 | } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || | |
ab871b90 EB |
2076 | !gid_eq(attr->ia_gid, inode->i_gid)) { |
2077 | req->r_args.setattr.gid = cpu_to_le32( | |
2078 | from_kgid(&init_user_ns, attr->ia_gid)); | |
355da1eb SW |
2079 | mask |= CEPH_SETATTR_GID; |
2080 | release |= CEPH_CAP_AUTH_SHARED; | |
2081 | } | |
2082 | } | |
2083 | if (ia_valid & ATTR_MODE) { | |
2084 | dout("setattr %p mode 0%o -> 0%o\n", inode, inode->i_mode, | |
2085 | attr->ia_mode); | |
2086 | if (issued & CEPH_CAP_AUTH_EXCL) { | |
2087 | inode->i_mode = attr->ia_mode; | |
2088 | dirtied |= CEPH_CAP_AUTH_EXCL; | |
2089 | } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || | |
2090 | attr->ia_mode != inode->i_mode) { | |
7221fe4c | 2091 | inode->i_mode = attr->ia_mode; |
355da1eb SW |
2092 | req->r_args.setattr.mode = cpu_to_le32(attr->ia_mode); |
2093 | mask |= CEPH_SETATTR_MODE; | |
2094 | release |= CEPH_CAP_AUTH_SHARED; | |
2095 | } | |
2096 | } | |
2097 | ||
2098 | if (ia_valid & ATTR_ATIME) { | |
13442b03 | 2099 | dout("setattr %p atime %lld.%ld -> %lld.%ld\n", inode, |
9bbeab41 AB |
2100 | inode->i_atime.tv_sec, inode->i_atime.tv_nsec, |
2101 | attr->ia_atime.tv_sec, attr->ia_atime.tv_nsec); | |
355da1eb SW |
2102 | if (issued & CEPH_CAP_FILE_EXCL) { |
2103 | ci->i_time_warp_seq++; | |
2104 | inode->i_atime = attr->ia_atime; | |
2105 | dirtied |= CEPH_CAP_FILE_EXCL; | |
2106 | } else if ((issued & CEPH_CAP_FILE_WR) && | |
95582b00 | 2107 | timespec64_compare(&inode->i_atime, |
355da1eb SW |
2108 | &attr->ia_atime) < 0) { |
2109 | inode->i_atime = attr->ia_atime; | |
2110 | dirtied |= CEPH_CAP_FILE_WR; | |
2111 | } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || | |
95582b00 | 2112 | !timespec64_equal(&inode->i_atime, &attr->ia_atime)) { |
9bbeab41 AB |
2113 | ceph_encode_timespec64(&req->r_args.setattr.atime, |
2114 | &attr->ia_atime); | |
355da1eb | 2115 | mask |= CEPH_SETATTR_ATIME; |
be70489e YZ |
2116 | release |= CEPH_CAP_FILE_SHARED | |
2117 | CEPH_CAP_FILE_RD | CEPH_CAP_FILE_WR; | |
355da1eb SW |
2118 | } |
2119 | } | |
c62498d7 | 2120 | if (ia_valid & ATTR_SIZE) { |
2d6795fb JL |
2121 | loff_t isize = i_size_read(inode); |
2122 | ||
2123 | dout("setattr %p size %lld -> %lld\n", inode, isize, attr->ia_size); | |
e90334e8 XL |
2124 | if ((issued & CEPH_CAP_FILE_EXCL) && attr->ia_size >= isize) { |
2125 | if (attr->ia_size > isize) { | |
2126 | i_size_write(inode, attr->ia_size); | |
2127 | inode->i_blocks = calc_inode_blocks(attr->ia_size); | |
2128 | ci->i_reported_size = attr->ia_size; | |
2129 | dirtied |= CEPH_CAP_FILE_EXCL; | |
2130 | ia_valid |= ATTR_MTIME; | |
2131 | } | |
c62498d7 | 2132 | } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || |
2d6795fb | 2133 | attr->ia_size != isize) { |
c62498d7 | 2134 | req->r_args.setattr.size = cpu_to_le64(attr->ia_size); |
2d6795fb | 2135 | req->r_args.setattr.old_size = cpu_to_le64(isize); |
c62498d7 JL |
2136 | mask |= CEPH_SETATTR_SIZE; |
2137 | release |= CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_EXCL | | |
2138 | CEPH_CAP_FILE_RD | CEPH_CAP_FILE_WR; | |
2139 | } | |
2140 | } | |
355da1eb | 2141 | if (ia_valid & ATTR_MTIME) { |
13442b03 | 2142 | dout("setattr %p mtime %lld.%ld -> %lld.%ld\n", inode, |
9bbeab41 AB |
2143 | inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec, |
2144 | attr->ia_mtime.tv_sec, attr->ia_mtime.tv_nsec); | |
355da1eb SW |
2145 | if (issued & CEPH_CAP_FILE_EXCL) { |
2146 | ci->i_time_warp_seq++; | |
2147 | inode->i_mtime = attr->ia_mtime; | |
2148 | dirtied |= CEPH_CAP_FILE_EXCL; | |
2149 | } else if ((issued & CEPH_CAP_FILE_WR) && | |
95582b00 | 2150 | timespec64_compare(&inode->i_mtime, |
355da1eb SW |
2151 | &attr->ia_mtime) < 0) { |
2152 | inode->i_mtime = attr->ia_mtime; | |
2153 | dirtied |= CEPH_CAP_FILE_WR; | |
2154 | } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || | |
95582b00 | 2155 | !timespec64_equal(&inode->i_mtime, &attr->ia_mtime)) { |
9bbeab41 AB |
2156 | ceph_encode_timespec64(&req->r_args.setattr.mtime, |
2157 | &attr->ia_mtime); | |
355da1eb | 2158 | mask |= CEPH_SETATTR_MTIME; |
be70489e YZ |
2159 | release |= CEPH_CAP_FILE_SHARED | |
2160 | CEPH_CAP_FILE_RD | CEPH_CAP_FILE_WR; | |
355da1eb SW |
2161 | } |
2162 | } | |
355da1eb SW |
2163 | |
2164 | /* these do nothing */ | |
2165 | if (ia_valid & ATTR_CTIME) { | |
2166 | bool only = (ia_valid & (ATTR_SIZE|ATTR_MTIME|ATTR_ATIME| | |
2167 | ATTR_MODE|ATTR_UID|ATTR_GID)) == 0; | |
13442b03 | 2168 | dout("setattr %p ctime %lld.%ld -> %lld.%ld (%s)\n", inode, |
9bbeab41 AB |
2169 | inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec, |
2170 | attr->ia_ctime.tv_sec, attr->ia_ctime.tv_nsec, | |
355da1eb | 2171 | only ? "ctime only" : "ignored"); |
355da1eb SW |
2172 | if (only) { |
2173 | /* | |
2174 | * if kernel wants to dirty ctime but nothing else, | |
2175 | * we need to choose a cap to dirty under, or do | |
2176 | * a almost-no-op setattr | |
2177 | */ | |
2178 | if (issued & CEPH_CAP_AUTH_EXCL) | |
2179 | dirtied |= CEPH_CAP_AUTH_EXCL; | |
2180 | else if (issued & CEPH_CAP_FILE_EXCL) | |
2181 | dirtied |= CEPH_CAP_FILE_EXCL; | |
2182 | else if (issued & CEPH_CAP_XATTR_EXCL) | |
2183 | dirtied |= CEPH_CAP_XATTR_EXCL; | |
2184 | else | |
2185 | mask |= CEPH_SETATTR_CTIME; | |
2186 | } | |
2187 | } | |
2188 | if (ia_valid & ATTR_FILE) | |
2189 | dout("setattr %p ATTR_FILE ... hrm!\n", inode); | |
2190 | ||
2191 | if (dirtied) { | |
f66fd9f0 YZ |
2192 | inode_dirty_flags = __ceph_mark_dirty_caps(ci, dirtied, |
2193 | &prealloc_cf); | |
4ca2fea6 | 2194 | inode->i_ctime = attr->ia_ctime; |
b4b924c7 | 2195 | inode_inc_iversion_raw(inode); |
355da1eb SW |
2196 | } |
2197 | ||
2198 | release &= issued; | |
be655596 | 2199 | spin_unlock(&ci->i_ceph_lock); |
604d1b02 YZ |
2200 | if (lock_snap_rwsem) |
2201 | up_read(&mdsc->snap_rwsem); | |
355da1eb | 2202 | |
fca65b4a SW |
2203 | if (inode_dirty_flags) |
2204 | __mark_inode_dirty(inode, inode_dirty_flags); | |
2205 | ||
355da1eb | 2206 | if (mask) { |
70b666c3 SW |
2207 | req->r_inode = inode; |
2208 | ihold(inode); | |
355da1eb SW |
2209 | req->r_inode_drop = release; |
2210 | req->r_args.setattr.mask = cpu_to_le32(mask); | |
2211 | req->r_num_caps = 1; | |
0ed1e90a | 2212 | req->r_stamp = attr->ia_ctime; |
752c8bdc | 2213 | err = ceph_mdsc_do_request(mdsc, NULL, req); |
355da1eb SW |
2214 | } |
2215 | dout("setattr %p result=%d (%s locally, %d remote)\n", inode, err, | |
2216 | ceph_cap_string(dirtied), mask); | |
2217 | ||
355da1eb | 2218 | ceph_mdsc_put_request(req); |
f66fd9f0 | 2219 | ceph_free_cap_flush(prealloc_cf); |
8179a101 YZ |
2220 | |
2221 | if (err >= 0 && (mask & CEPH_SETATTR_SIZE)) | |
2222 | __ceph_do_pending_vmtruncate(inode); | |
2223 | ||
355da1eb SW |
2224 | return err; |
2225 | } | |
2226 | ||
a26fecca AG |
2227 | /* |
2228 | * setattr | |
2229 | */ | |
c1632a0f | 2230 | int ceph_setattr(struct mnt_idmap *idmap, struct dentry *dentry, |
549c7297 | 2231 | struct iattr *attr) |
a26fecca | 2232 | { |
fd5472ed | 2233 | struct inode *inode = d_inode(dentry); |
36a4c72d | 2234 | struct ceph_fs_client *fsc = ceph_inode_to_client(inode); |
fd5472ed JK |
2235 | int err; |
2236 | ||
2237 | if (ceph_snap(inode) != CEPH_NOSNAP) | |
2238 | return -EROFS; | |
2239 | ||
5d6451b1 JL |
2240 | if (ceph_inode_is_shutdown(inode)) |
2241 | return -ESTALE; | |
2242 | ||
c1632a0f | 2243 | err = setattr_prepare(&nop_mnt_idmap, dentry, attr); |
fd5472ed JK |
2244 | if (err != 0) |
2245 | return err; | |
2246 | ||
36a4c72d | 2247 | if ((attr->ia_valid & ATTR_SIZE) && |
2d6795fb | 2248 | attr->ia_size > max(i_size_read(inode), fsc->max_file_size)) |
36a4c72d CX |
2249 | return -EFBIG; |
2250 | ||
2b83845f LH |
2251 | if ((attr->ia_valid & ATTR_SIZE) && |
2252 | ceph_quota_is_max_bytes_exceeded(inode, attr->ia_size)) | |
2253 | return -EDQUOT; | |
2254 | ||
8179a101 YZ |
2255 | err = __ceph_setattr(inode, attr); |
2256 | ||
2257 | if (err >= 0 && (attr->ia_valid & ATTR_MODE)) | |
13e83a49 | 2258 | err = posix_acl_chmod(&nop_mnt_idmap, dentry, attr->ia_mode); |
8179a101 YZ |
2259 | |
2260 | return err; | |
a26fecca AG |
2261 | } |
2262 | ||
5eed80fb XL |
2263 | int ceph_try_to_choose_auth_mds(struct inode *inode, int mask) |
2264 | { | |
2265 | int issued = ceph_caps_issued(ceph_inode(inode)); | |
2266 | ||
2267 | /* | |
2268 | * If any 'x' caps is issued we can just choose the auth MDS | |
2269 | * instead of the random replica MDSes. Because only when the | |
2270 | * Locker is in LOCK_EXEC state will the loner client could | |
2271 | * get the 'x' caps. And if we send the getattr requests to | |
2272 | * any replica MDS it must auth pin and tries to rdlock from | |
2273 | * the auth MDS, and then the auth MDS need to do the Locker | |
2274 | * state transition to LOCK_SYNC. And after that the lock state | |
2275 | * will change back. | |
2276 | * | |
2277 | * This cost much when doing the Locker state transition and | |
2278 | * usually will need to revoke caps from clients. | |
8266c4d7 XL |
2279 | * |
2280 | * And for the 'Xs' caps for getxattr we will also choose the | |
2281 | * auth MDS, because the MDS side code is buggy due to setxattr | |
2282 | * won't notify the replica MDSes when the values changed and | |
2283 | * the replica MDS will return the old values. Though we will | |
2284 | * fix it in MDS code, but this still makes sense for old ceph. | |
5eed80fb XL |
2285 | */ |
2286 | if (((mask & CEPH_CAP_ANY_SHARED) && (issued & CEPH_CAP_ANY_EXCL)) | |
8266c4d7 | 2287 | || (mask & (CEPH_STAT_RSTAT | CEPH_STAT_CAP_XATTR))) |
5eed80fb XL |
2288 | return USE_AUTH_MDS; |
2289 | else | |
2290 | return USE_ANY_MDS; | |
2291 | } | |
2292 | ||
355da1eb SW |
2293 | /* |
2294 | * Verify that we have a lease on the given mask. If not, | |
2295 | * do a getattr against an mds. | |
2296 | */ | |
01deead0 YZ |
2297 | int __ceph_do_getattr(struct inode *inode, struct page *locked_page, |
2298 | int mask, bool force) | |
355da1eb | 2299 | { |
3d14c5d2 YS |
2300 | struct ceph_fs_client *fsc = ceph_sb_to_client(inode->i_sb); |
2301 | struct ceph_mds_client *mdsc = fsc->mdsc; | |
355da1eb | 2302 | struct ceph_mds_request *req; |
49a9f4f6 | 2303 | int mode; |
355da1eb SW |
2304 | int err; |
2305 | ||
2306 | if (ceph_snap(inode) == CEPH_SNAPDIR) { | |
2307 | dout("do_getattr inode %p SNAPDIR\n", inode); | |
2308 | return 0; | |
2309 | } | |
2310 | ||
01deead0 YZ |
2311 | dout("do_getattr inode %p mask %s mode 0%o\n", |
2312 | inode, ceph_cap_string(mask), inode->i_mode); | |
1af16d54 XL |
2313 | if (!force && ceph_caps_issued_mask_metric(ceph_inode(inode), mask, 1)) |
2314 | return 0; | |
355da1eb | 2315 | |
5eed80fb | 2316 | mode = ceph_try_to_choose_auth_mds(inode, mask); |
49a9f4f6 | 2317 | req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_GETATTR, mode); |
355da1eb SW |
2318 | if (IS_ERR(req)) |
2319 | return PTR_ERR(req); | |
70b666c3 SW |
2320 | req->r_inode = inode; |
2321 | ihold(inode); | |
355da1eb SW |
2322 | req->r_num_caps = 1; |
2323 | req->r_args.getattr.mask = cpu_to_le32(mask); | |
01deead0 | 2324 | req->r_locked_page = locked_page; |
355da1eb | 2325 | err = ceph_mdsc_do_request(mdsc, NULL, req); |
01deead0 YZ |
2326 | if (locked_page && err == 0) { |
2327 | u64 inline_version = req->r_reply_info.targeti.inline_version; | |
2328 | if (inline_version == 0) { | |
2329 | /* the reply is supposed to contain inline data */ | |
2330 | err = -EINVAL; | |
48490776 XL |
2331 | } else if (inline_version == CEPH_INLINE_NONE || |
2332 | inline_version == 1) { | |
01deead0 YZ |
2333 | err = -ENODATA; |
2334 | } else { | |
2335 | err = req->r_reply_info.targeti.inline_len; | |
2336 | } | |
2337 | } | |
355da1eb SW |
2338 | ceph_mdsc_put_request(req); |
2339 | dout("do_getattr result=%d\n", err); | |
2340 | return err; | |
2341 | } | |
2342 | ||
6ddf5f16 MC |
2343 | int ceph_do_getvxattr(struct inode *inode, const char *name, void *value, |
2344 | size_t size) | |
2345 | { | |
2346 | struct ceph_fs_client *fsc = ceph_sb_to_client(inode->i_sb); | |
2347 | struct ceph_mds_client *mdsc = fsc->mdsc; | |
2348 | struct ceph_mds_request *req; | |
2349 | int mode = USE_AUTH_MDS; | |
2350 | int err; | |
2351 | char *xattr_value; | |
2352 | size_t xattr_value_len; | |
2353 | ||
2354 | req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_GETVXATTR, mode); | |
2355 | if (IS_ERR(req)) { | |
2356 | err = -ENOMEM; | |
2357 | goto out; | |
2358 | } | |
2359 | ||
6eb06c46 | 2360 | req->r_feature_needed = CEPHFS_FEATURE_OP_GETVXATTR; |
6ddf5f16 MC |
2361 | req->r_path2 = kstrdup(name, GFP_NOFS); |
2362 | if (!req->r_path2) { | |
2363 | err = -ENOMEM; | |
2364 | goto put; | |
2365 | } | |
2366 | ||
2367 | ihold(inode); | |
2368 | req->r_inode = inode; | |
2369 | err = ceph_mdsc_do_request(mdsc, NULL, req); | |
2370 | if (err < 0) | |
2371 | goto put; | |
2372 | ||
2373 | xattr_value = req->r_reply_info.xattr_info.xattr_value; | |
2374 | xattr_value_len = req->r_reply_info.xattr_info.xattr_value_len; | |
2375 | ||
2376 | dout("do_getvxattr xattr_value_len:%zu, size:%zu\n", xattr_value_len, size); | |
2377 | ||
2378 | err = (int)xattr_value_len; | |
2379 | if (size == 0) | |
2380 | goto put; | |
2381 | ||
2382 | if (xattr_value_len > size) { | |
2383 | err = -ERANGE; | |
2384 | goto put; | |
2385 | } | |
2386 | ||
2387 | memcpy(value, xattr_value, xattr_value_len); | |
2388 | put: | |
2389 | ceph_mdsc_put_request(req); | |
2390 | out: | |
2391 | dout("do_getvxattr result=%d\n", err); | |
2392 | return err; | |
2393 | } | |
2394 | ||
355da1eb SW |
2395 | |
2396 | /* | |
2397 | * Check inode permissions. We verify we have a valid value for | |
2398 | * the AUTH cap, then call the generic handler. | |
2399 | */ | |
549c7297 CB |
2400 | int ceph_permission(struct user_namespace *mnt_userns, struct inode *inode, |
2401 | int mask) | |
355da1eb | 2402 | { |
b74c79e9 NP |
2403 | int err; |
2404 | ||
10556cb2 | 2405 | if (mask & MAY_NOT_BLOCK) |
b74c79e9 NP |
2406 | return -ECHILD; |
2407 | ||
508b32d8 | 2408 | err = ceph_do_getattr(inode, CEPH_CAP_AUTH_SHARED, false); |
355da1eb SW |
2409 | |
2410 | if (!err) | |
47291baa | 2411 | err = generic_permission(&init_user_ns, inode, mask); |
355da1eb SW |
2412 | return err; |
2413 | } | |
2414 | ||
428bb68a | 2415 | /* Craft a mask of needed caps given a set of requested statx attrs. */ |
04fabb11 | 2416 | static int statx_to_caps(u32 want, umode_t mode) |
428bb68a JL |
2417 | { |
2418 | int mask = 0; | |
2419 | ||
58981784 | 2420 | if (want & (STATX_MODE|STATX_UID|STATX_GID|STATX_CTIME|STATX_BTIME)) |
428bb68a JL |
2421 | mask |= CEPH_CAP_AUTH_SHARED; |
2422 | ||
04fabb11 JL |
2423 | if (want & (STATX_NLINK|STATX_CTIME)) { |
2424 | /* | |
2425 | * The link count for directories depends on inode->i_subdirs, | |
2426 | * and that is only updated when Fs caps are held. | |
2427 | */ | |
2428 | if (S_ISDIR(mode)) | |
2429 | mask |= CEPH_CAP_FILE_SHARED; | |
2430 | else | |
2431 | mask |= CEPH_CAP_LINK_SHARED; | |
2432 | } | |
428bb68a JL |
2433 | |
2434 | if (want & (STATX_ATIME|STATX_MTIME|STATX_CTIME|STATX_SIZE| | |
2435 | STATX_BLOCKS)) | |
2436 | mask |= CEPH_CAP_FILE_SHARED; | |
2437 | ||
2438 | if (want & (STATX_CTIME)) | |
2439 | mask |= CEPH_CAP_XATTR_SHARED; | |
2440 | ||
2441 | return mask; | |
2442 | } | |
2443 | ||
355da1eb | 2444 | /* |
428bb68a JL |
2445 | * Get all the attributes. If we have sufficient caps for the requested attrs, |
2446 | * then we can avoid talking to the MDS at all. | |
355da1eb | 2447 | */ |
b74d24f7 | 2448 | int ceph_getattr(struct mnt_idmap *idmap, const struct path *path, |
549c7297 | 2449 | struct kstat *stat, u32 request_mask, unsigned int flags) |
355da1eb | 2450 | { |
a528d35e | 2451 | struct inode *inode = d_inode(path->dentry); |
aa87052d | 2452 | struct super_block *sb = inode->i_sb; |
232d4b01 | 2453 | struct ceph_inode_info *ci = ceph_inode(inode); |
58981784 | 2454 | u32 valid_mask = STATX_BASIC_STATS; |
428bb68a | 2455 | int err = 0; |
355da1eb | 2456 | |
5d6451b1 JL |
2457 | if (ceph_inode_is_shutdown(inode)) |
2458 | return -ESTALE; | |
2459 | ||
428bb68a | 2460 | /* Skip the getattr altogether if we're asked not to sync */ |
261998c3 | 2461 | if ((flags & AT_STATX_SYNC_TYPE) != AT_STATX_DONT_SYNC) { |
04fabb11 JL |
2462 | err = ceph_do_getattr(inode, |
2463 | statx_to_caps(request_mask, inode->i_mode), | |
2464 | flags & AT_STATX_FORCE_SYNC); | |
428bb68a JL |
2465 | if (err) |
2466 | return err; | |
2467 | } | |
2468 | ||
b74d24f7 | 2469 | generic_fillattr(&nop_mnt_idmap, inode, stat); |
ebce3eb2 | 2470 | stat->ino = ceph_present_inode(inode); |
58981784 JL |
2471 | |
2472 | /* | |
2473 | * btime on newly-allocated inodes is 0, so if this is still set to | |
2474 | * that, then assume that it's not valid. | |
2475 | */ | |
2476 | if (ci->i_btime.tv_sec || ci->i_btime.tv_nsec) { | |
2477 | stat->btime = ci->i_btime; | |
2478 | valid_mask |= STATX_BTIME; | |
2479 | } | |
2480 | ||
428bb68a | 2481 | if (ceph_snap(inode) == CEPH_NOSNAP) |
aa87052d | 2482 | stat->dev = sb->s_dev; |
428bb68a JL |
2483 | else |
2484 | stat->dev = ci->i_snapid_map ? ci->i_snapid_map->dev : 0; | |
2485 | ||
2486 | if (S_ISDIR(inode->i_mode)) { | |
aa87052d | 2487 | if (ceph_test_mount_opt(ceph_sb_to_client(sb), RBYTES)) { |
428bb68a | 2488 | stat->size = ci->i_rbytes; |
aa87052d XL |
2489 | } else if (ceph_snap(inode) == CEPH_SNAPDIR) { |
2490 | struct ceph_inode_info *pci; | |
2491 | struct ceph_snap_realm *realm; | |
2492 | struct inode *parent; | |
2493 | ||
2494 | parent = ceph_lookup_inode(sb, ceph_ino(inode)); | |
f86a4866 | 2495 | if (IS_ERR(parent)) |
aa87052d XL |
2496 | return PTR_ERR(parent); |
2497 | ||
2498 | pci = ceph_inode(parent); | |
2499 | spin_lock(&pci->i_ceph_lock); | |
2500 | realm = pci->i_snap_realm; | |
2501 | if (realm) | |
2502 | stat->size = realm->num_snaps; | |
2503 | else | |
2504 | stat->size = 0; | |
2505 | spin_unlock(&pci->i_ceph_lock); | |
2506 | iput(parent); | |
2507 | } else { | |
428bb68a | 2508 | stat->size = ci->i_files + ci->i_subdirs; |
aa87052d | 2509 | } |
428bb68a JL |
2510 | stat->blocks = 0; |
2511 | stat->blksize = 65536; | |
2512 | /* | |
2513 | * Some applications rely on the number of st_nlink | |
2514 | * value on directories to be either 0 (if unlinked) | |
2515 | * or 2 + number of subdirectories. | |
2516 | */ | |
2517 | if (stat->nlink == 1) | |
2518 | /* '.' + '..' + subdirs */ | |
2519 | stat->nlink = 1 + 1 + ci->i_subdirs; | |
355da1eb | 2520 | } |
428bb68a | 2521 | |
58981784 | 2522 | stat->result_mask = request_mask & valid_mask; |
355da1eb SW |
2523 | return err; |
2524 | } | |
5d6451b1 JL |
2525 | |
2526 | void ceph_inode_shutdown(struct inode *inode) | |
2527 | { | |
2528 | struct ceph_inode_info *ci = ceph_inode(inode); | |
2529 | struct rb_node *p; | |
2530 | int iputs = 0; | |
2531 | bool invalidate = false; | |
2532 | ||
2533 | spin_lock(&ci->i_ceph_lock); | |
2534 | ci->i_ceph_flags |= CEPH_I_SHUTDOWN; | |
2535 | p = rb_first(&ci->i_caps); | |
2536 | while (p) { | |
2537 | struct ceph_cap *cap = rb_entry(p, struct ceph_cap, ci_node); | |
2538 | ||
2539 | p = rb_next(p); | |
2540 | iputs += ceph_purge_inode_cap(inode, cap, &invalidate); | |
2541 | } | |
2542 | spin_unlock(&ci->i_ceph_lock); | |
2543 | ||
2544 | if (invalidate) | |
2545 | ceph_queue_invalidate(inode); | |
2546 | while (iputs--) | |
2547 | iput(inode); | |
2548 | } |